Alecto WS-4900 - Weather Station with Wireless Outdoor Sensor Manual

OVERVIEW

Indoor unit

1. SNOOZE / LIGHT button: snooze button for the alarm clock function and for switching on the display lighting
   Attention: the light sensor for the automatic display lighting is also located here, so make sure not to cover this button.
2. Display
   (everything shown in the display is described in the next section)
3. HISTORY button:
   shows the data of the past 24 hours
4. Rain button, for displaying the various rain parameters
5. Barometer button, for displaying the various barometer parameters
6. MAX/MIN button:
   for displaying the measured minimum and maximum values, including the time and date this measurement was taken
7. Index button, for displaying the various index parameters
8. Wind button, for displaying the various wind parameters

9. Desk stand
10. Suspension hole for wall-mounting
11. Button : alarm setup button
12. Button : alarm clock setup button
13. Button : clock setup button
14. HI-LO-AUTO: setup button for display lighting
15. °C / °F switch: to switch the temperature display between degrees Celsius and degrees Fahrenheit
16. RCC button: to enable or disable the DCF receiver
17. Battery compartment for the backup battery
18. Power adaptor input (micro USB plug)
19. button: down button
20. button: up button
21. RESET button: to restart the indoor unit in case of a (possible) error
22. SENSOR button: to make the outdoor unit search (again) for the indoor unit

Outdoor unit

1. Rain meter
2. Spirit level (to mount the outdoor unit as horizontally as possible)
3. Antenna
4. Wind speed meter
5. Mounting pole
6. Air guides for the temperature and humidity sensor
7. Wind vane for the wind direction
8. Mounting plate
9. Attachment for installation on a pole
10. LED light, illuminates while transmitting the measurement data
11. RESET button: to reset the outdoor unit in case of a (possible) error 11
12. Battery compartment
13. Fastening screws for installation on a pole

Rain meter

1. Rain collector
2. Tipping tray (for rainfall measurement)
3. Sensor (for the tipping count)
4. Water drain

Temperature and humidity sensor

1. Air guides for the temperature and humidity sensor
2. Temperature and humidity sensor

Wind sensor

1. Wind catchers for measuring the wind speed
2. Wind direction vane

INSTALLATION

Attention: after the installation, it may take several hours up to a day before the correct values are displayed.

Attention: the indoor unit is powered by the supplied power adaptor. For backup power, you may insert the included 3V CR-2032 button cell battery.

Power supply

Indoor unit

The indoor unit is powered by the supplied power adaptor with micro USB plug. The model number of this adaptor is: HX075-0500600-AG-001. Only use this adaptor. Insert the plug of this adaptor into the rear of the indoor unit according to the picture below and insert the adaptor into a 230V wall socket.

Use a coin to unscrew the battery cover for the backup battery by turning it anti-clockwise and insert a CR-2032 button cell battery (not incl.) according to the markings inside the battery compartment (minus pole downwards). Replace the battery cover and lock it by using the coin and turning the battery cover a little clockwise. See also 'OPEN' and 'CLOSE' on the battery cover.

Outdoor unit

Open the battery compartment by loosening the battery cover using a small crosshead screwdriver. Insert 3 x size AA 1.5V batteries according to the figure below, paying attention to the polarity (+ and -). Replace the cover (batteries are not included).

Advice regarding the batteries for the outdoor unit

Because normal alkaline batteries do not perform or do not perform well at temperatures around or below 0°C, the use of standard alkaline batteries in the outdoor unit is not recommended. For the outdoor unit, we therefore recommend installing Lithium batteries that have been designed to function at a temperature range of -20°C to 60°C. These batteries are available through the service department of Alecto via internet www.alecto.info
The lifespan of Lithium batteries with a capacity of 2900mAh is well over a year.

Pairing indoor unit / outdoor unit

Automatically

As soon as the batteries are inserted into the indoor unit, the indoor unit starts searching for a signal from the outdoor unit for 1 minute. So, if you have installed batteries in the outdoor unit within that minute and these units 'find' each other, they will automatically connect with each other and the display of the indoor unit will show the temperature, humidity, rainfall amount, wind speed and the wind direction as the outdoor unit transmits this data.

Manually

If the units cannot be paired automatically, or after replacing the batteries, you can pair the outdoor sensor (again) with the weather station unit as follows:

1. Briefly press the SENSOR button at the rear of the indoor unit, the antenna symbol in the display starts flashing
2. Briefly press the RESET button on the outdoor unit.
   
3. The units will have found each other (again) after several seconds

Positioning

Indoor unit

You may choose to suspend the weather station from a wall using a simple screw or to use it as a desk model using the supplied table stand. In any case, never place the weather station in direct sunlight or nest to a heat-radiating lamp or stove.

Outdoor unit

You may choose to place the outdoor unit onto a flat surface (e.g. a fence or railing) or to mount it on a pole (excluded). In any case, make sure to position the unit at least 1.5 meters above the ground, standing freely in the rain and wind.

General installation and placement tips

• First check whether the outdoor unit is within range of the indoor unit before permanently installing it. Maintain a distance of a maximum of 30 meters between the outdoor unit and indoor unit.
• Make sure the outdoor unit is placed at least 1.5 meters above the ground and that the unit is openly standing in the rain and wind.
• For the rain meter to work as accurately as possible, the outdoor unit must be as horizontal as possible. To do this, use the built-in spirit level on top of the outdoor unit.
• To be able to indicate from which direction the wind is coming from, the outdoor unit must be oriented towards the north. See the indication N on top of the outdoor unit for this. Use a precise compass (excluded) to properly orientate the unit.
• Ensure that the outdoor unit is hanging or standing freely. Particularly the wind speed meter and wind vane must hang in direct wind.
• Find a location where the chance of blowing leaves is minimal. Leaves blown into the rain collector can block the rain meter or influence the measurement results. In any case, we recommend that you place the outdoor unit in such a way that it is fairly easy to remove any blown leaves and replace the batteries in the outdoor unit.
• Of course, you may first keep the outdoor unit within reach for a week to test all its functions. Only permanently install the outdoor unit after everything is functioning properly.

Clock

Introduction

The WS-4900 is provided with a built-in DCF receiver which receives the DCF time signal from Frankfurt. This signal ensures that the clock shows the time very accurately, provided a strong enough signal is being received.

Automatic

As soon as you install the batteries into the indoor unit, the clock starts searching for the DCF radio signal to set the correct time and date while the antenna symbol flashes. After several seconds or minutes the WS-4900 will start showing the correct time. In extreme cases, it can take over a day before the DCF time is shown.

While searching for the radio signal, you cannot continuously switch on the display lighting. However by pressing the ALARM/SNOOZE button, the display lighting will switch on but switches off again after 5 seconds. As soon as the clock has found the radio signal, or when stopping the search by briefly pressing the RCC button, the display lighting switches on continuously.

Manually

If the clock cannot receive the radio signal or cannot receive it well enough, you can set the clock manually as follows:

1. Press and hold the button for 2 seconds, 12Hr or 24Hr will appear in the display
2. Use to set the time format, then briefly press the button
3. Use to set the hours and then briefly press the button
4. Use to set the minutes and then briefly press the button
5. Use to set the seconds to 0 (this allows you to have the clock run synchronously with your own clock) and then briefly press the button
6. Use to set the year and then briefly press the button
7. Use to set the month and then briefly press the button
8. Use to set the date and then briefly press the button
9. Use to set the difference in hours as compared to the DCF time. For use in the Benelux, select '0' and briefly press the button
10. Use to set the language for displaying the days, you may choose from: EN (English), FR (French), DE (German), ES (Spanish) or IT (Italian), briefly press the button
11. Use to determine whether the clock must automatically switch to daylight saving time (AUTO) or this must be done manually (OFF), briefly press the button

The clock is now set manually.
When the DCF receiver is enabled and a strong signal is being received, the receiver will overwrite the clock display.

To switch the DCF receiver on/off

You may switch off the DCF receiver as follows to only display the time and date you've programmed yourself:

• to switch off: press and hold the RCC button at the rear of the weather station for 8 seconds until OFF illuminates and the antenna symbol disappears

You may switch the receiver back on as follows:

• to switch on: press and hold the RCC button at the rear of the weather station for 8 seconds until ON illuminates, the antenna symbol starts flashing and the display turns green.

The symbol in the upper part and in the middle of the display shows the status of the DCF clock:

No symbol: the DCF receiver is switched off; the displayed time is determined by the internal clock of the weather station

flashing: the DCF receiver is switched on and is searching for the DCF signal; the displayed time is determined by the internal clock of the weather station

remains lit: the DCF receiver is switched on and is receiving the DCF signal; the displayed time and date are determined by the atomic DCF clock in Frankfurt

To reset the rain data

After everything is installed, press and hold the HISTORY button for 10 seconds to delete all measurement data up to that moment. This prevents you from seeing measurement data at a later time that was caused by movements during the installation.

DISPLAY

Time and date

1. Display of the actual time
2. Illuminates when DST is enabled (DST = Daylight Saving Time)
3. Illuminates when the DCF clock radio signal is being received and indicates the reception strength
   good signal strength
   acceptable signal strength
   average signal strength
   and no or very weak signal strength
4. Display of the moon phase (*1)
5. Display of the day of the week
6. Display of the date

Indoor temperature and humidity

1. 'indoor' indication
2. Comfort icon, this is a combination of the temperature and humidity.
   There's no comfort indication at temperatures <0°C (32°F) or >60°C (140°F)

   Comfort indications: = too cold / too dry = comfortable = too warm / too humid

3. Indoor temperature
4. Relative indoor humidity

Outdoor temperature and humidity

1. 'outdoor' indication
2. 'weak battery' indication in the outdoor unit
3. Signal strength indication of the outdoor unit
4. Outdoor temperature
5. Relative outdoor humidity

Weather forecast

Remarks:

• A weather forecast based on air pressure has an accuracy of 70% to 75%; please keep in mind that a correct weather forecast cannot be guaranteed
• The forecast is based on the upcoming 12 hours and may not represent the current situation
• The 'snow' forecast is based in air pressure combined with the temperature: when the forecast is actually 'rain', but the outdoor temperature is below 26°F (-3°C), then 'snow' is expected

Barometer (air pressure)

If this screen isn't visible, first briefly press the button

1. 'barometer' indication
2. Actual air pressure
3. This shows the air pressure trend over the last 24 hours
4. Air pressure per hour over the last 24 hours
5. Indicates whether the relative or absolute air pressure is shown (see also * add 5)
6. Indicates whether the air pressure is shown in hPa (hectoPascal), in inHg (inch mercury pressure) or mmHg (millimeter mercury pressure) (see also * add 6)

* add 5: An absolute air pressure indicates the air pressure that is present regardless of the altitude at which you measure the air pressure. A relative air pressure is the air pressure that is compensated for the altitude at which you measure the air pressure. For a correct weather forecast you need the relative air pressure. You may set the desired unit as follows:

1. Press and hold the button for 2 seconds
2. Use to select the desired unit: REL for relative, ABS for absolute
3. Briefly press the button (if the air pressure now starts flashing, press the button again)

Refer to the chapter RELATIVE AIR PRESSURE for adjusting the relative air pressure display in case you're using the weather station somewhere a lot higher than sea level.

add 6: In the Benelux one uses the hectopascal notation. Before, the air pressure was sometimes also expressed in bars. 1 mbar equals 1 hPa. Briefly press the button to switch between these notations.

Rain

If this screen isn't visible, first briefly press the button

1. 'rain' indication
2. Illuminates when the max. rain alert is set
3. Indicates over which period the displayed rainfall amount is measured (see also * add 3).
4. Rainfall per day over the last 5 days
5. Rainfall trend over the last 5 days
6. Today's rainfall amount
7. Indication of whether the amount of rainfall is displayed in "in" (inch) or in "mm" (millimetre). (see also * add 7)

* add 3: No indication =: the rainfall during the past hour (this is updated every 6 minutes and shows the amount of rainfall during the past 60 minutes).
DAILY =: rainfall of today, calculated from midnight.
WEEKLY =: rainfall from the beginning of the week (Monday)
MONTHLY =: rainfall in this month
Briefly press the button to switch between these indications.

* add 7: You may set the desired unit as follows:

1. press and hold the button for 2 seconds
2. use to select the desired unit
3. briefly press the buttons

Wind (direction + speed)

1. Indication 'wind'
2. Actual wind direction
3. Wind speed, expressed in colloquial language (see also * add 3)
4. Illuminates when the max. wind speed alert is set
5. Wind speed, according to the Beaufort scale
6. Wind direction at this moment (large arrow)
7. Wind directions of the last 5 minutes, max. 6 small arrows that disappear after 5 minutes
8. Indication of whether the displayed wind speed is an average speed or a wind gust (see also * add 8)
9. Indication of whether the wind speed is displayed in mph (miles per hour), in m/s (meters per second), in km/h (kilometers per hour) or in Knots (1 KNOTS = 1.151 mph (1.852 km/h)) (see also * add 9)
10. Actual wind speed

* add 3: LIGHT = 1-19km/h
MODERATE = 20-49 km/h
STRONG = 50-88 km/h
STORM = ≥ 88 km/h

* add 8: AVERAGE = average speed
GUST = wind gust
Briefly press the button to switch between these indications.

* add 9: You may set the desired unit as follows:

1. press and hold the button for 2 seconds
2. use to select the desired unit
3. briefly press the button

Wind chill and dew temperature

1. Indication of whether this displayed temperature is the 'Feels like', the 'Wind chill', the 'Heat Index' or the 'Dew Point' (see also * add 1)
2. Temperature according to the indication shown under 1 (see also * add 2)

* add 1: Feels like: temperature as you experience it
Wind Chill: combination of the measured temperature and the wind speed
Heat index: combination of the measured temperature and the humidity
Dewpoint (Dew point temperature): the temperature at which water vapour turns to water (mist, dew or frost). This temperature depends on the indoor temperature and the air pressure.
Briefly press the button to switch between these indications.

* add 2:

At HEAT INDEX:	the alert level is:
< 27°C (display 'LO')	no danger
80°F - 90°F (27°C - 32°C)	pay attention (risk of exhaustion due to heat)
91°F - 105°F (33°C - 40°C)	pay close attention (risk of dehydration due to heat)
106°F - 129°F (41°C - 54°C)	danger (increased risk of exhaustion due to heat)
≥130°F (≥55°C)	extreme danger (high risk of dehydration / stroke)

Moon phase

The moon phase display is linked to the date, month and year setting. The following moon phases can be displayed:

Maximum / Minimum memory

Use the MAX/MIN button to display the following maximum and minimum values one after the other:
Max. outdoor temperature - Min. outdoor temperature - Max. outdoor humidity - Min. outdoor humidity - Max. indoor temperature - Min. indoor temperature - Max. indoor humidity - Min. indoor humidity - Max. 'Feels like' temperature - Min. 'Feels like' temperature - Max. 'Wind chill' temperature - Min. 'Wind chill' temperature - Max. 'Wind index' - Min. 'Wind index' - Max. 'Dew point' - Min. 'Dew point' - Max. air pressure - Min. air pressure - Max. average wind speed - Max. wind gust - Max. rainfall.

The lower part of the display shows the day and time at which the concerned maximum of minimum value was measured.

Press and hold the MAX/MIN for 2 seconds to reset the maximum and minimum values.

Display lighting

Use the HI-LO-AUTO switch at the rear of the indoor unit to set the display lighting
AUTO: the display lighting follows the ambient light: at low ambient light the display lighting also decreases, at strong ambient light the display lighting increases.
Hi: display lighting set to maximum level
Lo: display lighting set to minimum level (press the ALARM / SNOOZE button on top of the indoor unit to set the display lighting to the maximum level. This light switches off again 5 seconds after releasing the button.

While the weather station is searching for the radio signal for the clock function, you cannot switch the display lighting on Hi continuously. When pressing the ALARM/SNOOZE button, the lighting does switch on, but will switch off again after 5 seconds. As soon as the clock has found the radio signal, or when stopping the search by briefly pressing the RCC button, the display lighting switches on continuously.

Outdoor unit reception indication

The upper left part of the indoor unit's display shows the signal strength of the outdoor unit.

Upon receiving data from the outdoor unit, the antenna symbol flashes 2x.

MAX-MIN ALERT

Introduction

You may set an alert for the following measurements when a maximum or minimum value is being exceeded:

Indoor temperature	min/max alert
Indoor humidity	min/max alert
Outdoor temperature	min/max alert
Outdoor humidity	min/max alert
Rainfall	max alert (only the actual amount of rainfall as off 12:00am is considered)
Wind speed	max alert

Hi-Lo limits setup

1. Press the button once or repeatedly until the desired display starts flashing followed by 'HI AL' or 'LO AL' (whatever applies)
2. Use to set the limit value
3. Briefly press the button to save the value
4. Press the button again to go to the next value or wait several seconds until the settings are closed automatically

Hi-Lo alert function setup

1. Press the button once or repeatedly until the desired display starts flashing followed by 'HI AL' or 'LO AL' (whatever applies)
2. Briefly press the button to switch this alert on or off.

Operation

As soon as the set limit is exceeded, an alert will sound for up to 2 minutes while the concerned value starts flashing. You may stop the alert sound by briefly pressing the ALARM/ SNOOZE button. The concerned measurement value automatically stops flashing when it returns to within the set limit (or as soon as you adjust the limit or switch off the alert function for this measurement).

ALARM CLOCK

Introduction

You may program an alarm (wake-up) time in the WS-4900.
You may then also enable a frost alert: when the outdoor temperature falls below -3°C, the wake-up signal will sound 30 minutes before the set wake-up time.

To set the alarm time

1. Press and hold the button at the rear of the weather station for 2 seconds until the hour digits start flashing
2. Use to set the hours and then briefly press , the minute digits start flashing
3. Use to set the minutes and then briefly press , the alarm time is now set

Attention: after setting the alarm time for the first time, this function is enabled directly.

To set the alarm function

1. Press the button once or several times to check the alarm or to switch it on/off
   Only "AL" appears: the time being displayed is the set alarm time, but the alarm itself is switched off
   "AL" + "" appears: the alarm is switched on and the wake-up signal will sound at the set alarm time
   "AL" + "" + "" appears: the frost alert is set
2. Release the button, after several seconds the actual time is displayed and the alarm status, according to the above description, remains visible

Operation

• At the set time, the alarm will sound for up to 120 seconds
• Press the button to stop the alarm signal beforehand or press the SNOOZE/LIGHT button on top of the indoor unit to enable the snooze function; the symbol will flash and the wake-alarm will then sound again after 5 minutes
• The alarm is repeated daily unless you disable it according to the above instructions.
• If you've enabled the frost alert and the outdoor temperature falls below -3°C, the wake-up signal will sound 30 minutes earlier than the time you've set. If the outdoor temperature is above -3°C, the alarm will sound at the set time.

RELATIVE AIR PRESSURE

Introduction

If you're living in an area considerably higher than sea level, you'll experience a lower air pressure. To have the device calculate the weather forecast accurately, you must correct the air pressure for this altitude.

To set the relative air pressure

1. Refer to the internet or your local authorities for information regarding your local air pressure
2. If the barometer data is not shown in the display, first briefly press the button
3. Then make sure the correct notation hPa, inHg or mmHg is used by briefly and repeatedly pressing the button
4. Press and hold the button for approx. 2 seconds until 'ABS' (absolute) or 'REL' (relative) starts flashing
5. Use to ensure 'REL' (relative) is flashing
6. Briefly press , the air pressure display starts flashing
7. Use to correct the display according to the information obtained via the internet or from your local authorities
8. Briefly press to save the air pressure value

MAINTENANCE

Rain meter

You may dismantle the rain meter as follows to remove any spiders or other insects:

1. Loosen the upper ring of the rain water collector by rotating it 30° anti-clockwise until the star symbol at the bottom of the funnel is in the "Unlock" position. You may now remove this ring to have access to the interior of the rain meter.
   
2. Use a soft brush with long bristles to clean the rain meter.
3. Replace the ring onto the rain meter and fasten it by rotating it clockwise until the star sign at the bottom of the funnel is in the "Lock" position

Outdoor temperature and humidity sensor

1. Refer to the illustration and remove the wind guides from the outdoor unit.
   
2. Blow into the holder containing the temperature and humidity sensor until clean and use a soft brush with long bristles to clean the wind guides. DO NOT USE WATER.
3. Replace and fasten the wind guides.

TROUBLESHOOTING

Problems	Solutions
No or strange measurement values from the rain sensor	Check the drainage hole in the rain meter. It must be open. Check whether the rain meter is placed horizontally. For as long as the weather station is searching for the correct time, no rain information is transmitted. This may take up to approximately 15 minutes.
No or strange measurement values of the thermometer and for the humidity.	Check whether the air grooves are open. Check the sensor housing.
No or strange measurement values for wind speed and wind direction	Check the wind vane. Check the wind cups of the wind speed meter.
and (reception signal lost for 15 minute)	Move the weather station closer to the outdoor unit. Ensure that the weather station is not located near other electronic devices that may cause interference because of wireless communication (TVs, PCs, microwaves). When this doesn't resolve the problems, please reset both the indoor and outdoor unit.
and (reception signal lost for 1 hour)

ORIENTING THE OUTDOOR UNIT TO THE SOUTH

If your situation doesn't allow the outdoor unit to be aimed at the North (N), but it can be aimed to the South (S), you may adjust the indoor unit's display as follows:

1. Press and hold the button for 8 seconds, at the indoor unit 7 triangular indicators start flashing that indicate the current setting.
2. Use or to indicate the correct setting of the outdoor unit
   
   select this version when the N on the outdoor unit is oriented to the North
   
   select this version when the N on the outdoor unit is oriented to the South
3. Briefly press the button to save your setting

Keep in mind that in the case of this last setting the moon phases are displayed in the way you'd view them from the southern hemisphere of the earth.

SPECIFICATIONS

Indoor unit:
dimensions:	118 x 192.5 x 22mm (excl. desk stand)
weight:	260g
power:	5V DC 600mA mains power adaptor, model number: HX075-0500600AG-001, incl.
backup battery:	CR2032, incl. Backup battery lifespan: 4 years (provided the power adapter is connected, otherwise 2 months). The indoor unit provides no indication regarding this battery.
frequency:	868MHz
Outdoor sensor:
dimensions:	343.5 x 393.5 x 136 mm
weight:	673g (including batteries)
power:	3x 1.5V AA battery, excl. (preferably install Lithium batteries)
frequency:	868MHz
RF Power:	≤6dBm
transmission:	every 12 seconds
Indoor temperature:
units of measurement:	°C or °F
display range:	-40°C to 70°C (-40°F to 158°F) ('LO' at <-40°C, 'Hi' at >70°C)
effective range:	-10°C to 50°C (14°F to 122°F)
resolution:	0.1°C or 0.1°F
accuracy:	<0°C or >40°C ± 2°C (<32°F or >104°F ± 3.6°F) 0~40°C ±1°C (32~104°F ± 1.8°F)
memory display:	history of the past 24 hours, MIN/MAX temperature with time and date
Outdoor temperature:
units of measurement:	°C or °F
display range:	-40°C to 80°C (-40°F to 176°F) ('LO' at <-40°C, 'Hi' at >80°C)
effective range:	-40°C to 60°C (-40°F to 140°F)
resolution:	0.1°C or 0.1°F
accuracy:	-40°C ~ -20°C ± 1.5°C (-40°F ~ -4°F ± 2.7°F) -20°C ~ 5°C ± 1°C (-3.8°F ~ 41°F ± 1.8°F) 5°C ~ 60°C ± 0.4°C (41.2°F ~ 140°F ± 0.7°F) 60°C ~ 80°C ± 0.8°C (140.2°F ~ 176°F ± 1.4°F)
memory display:	history of the past 24 hours, MIN/MAX temperature with time and date
Indoor humidity:
display range:	20% to 90% ('LO' at <20%: 'Hi' at >90%) (at temperatures between 0°C and 60°C)
effective range:	20% to 90% relative humidity
resolution:	1%
accuracy:	20% ~ 40% RH, ± 8% RH, at 25°C (77°F) 41% ~ 70% RH, ± 5% RH, at 25°C (77°F) 71% ~ 90% RH, ± 8% RH, at 25°C (77°F)
memory display:	history of the past 24 hours, MIN/MAX humidity with time and date
Outdoor humidity:
display range:	1% to 99%
resolution:	1%
accuracy:	1% ~ 20% RH ± 6.5% RH at 25°C (77°F) 20% ~ 80% RH ± 3.5% RH at 25°C (77°F) 80% ~ 99% RH ± 6.5% RH at 25°C (77°F)
memory display:	history of the past 24 hours, MIN/MAX humidity with time and date
Air pressure:
units of measurement:	hPa, inHg, mmHg
display range:	540 to 1100hPa
resolution:	1hPa, 0.01inHg, 0.1mmHg
accuracy:	540 ~ 696hPa ± 8hPa / 700 ~ 1100hPa ±5hPa 15.95 ~ 20.55inHg ± 0.24inHg / 20.67 ~ 32.48inHg ± 0.15inHg 405 ~ 522mmHg ± 6mmHg / 525 ~ 825mmHg ± 3.8mmHg At a temperature of 25°C (77°F)
weather forecast:	sunny, partially cloudy, cloudy, rain, storm, snow
memory display:	history of the past 24 hours, MIN/MAX air pressure with time and date
Wind speed:
units of measurement:	mph, m/s, km/h, knots
display range:	0~112mph, 50m/s, 180km/h, 97knots
resolution:	0.1mph or 0.1knot or 0.1m/s
accuracy:	< 5m/s: +/- 0.5m/s > 5m/s: +/- 6%
display units:	average, gust
memory display:	history of the past 24 hours, MAX wind gust with direction, time and date
Wind direction:
number of wind directions:	16
Rainfall:
units of measurement:	mm, inch
display range:	0-9999mm (0~393.7inch)
resolution:	0.4 mm (0.0157 in)
accuracy:	±7%
display units:	actual rainfall, this day, this week, this month
memory display:	history of the past 24 hours
DCF radio controlled clock:
synchronization:	automatic or off
display:	HH:MM:SS / day and date
clock format:	12 hours AM/PM or 24 hours
date format:	DD / MM
languages for days of the week:	EN, FR, DE, ES, IT
daylight saving time:	automatically or off