Velleman DEM501 User Manual page 4

4. Features
 temperature readout in °C or °F
 max / min record
 display hold
 dew point temperature measurement
 3 ½-digits display with backlight
 low-battery indication
5. Overview
Refer to the illustrations on page 2 of this manual.
1 moisture sensor
2 LCD display
3 °C/°F button
4 MIN/MAX button
Display
1 battery level
2 data hold
3 MAX value
4 MIN value
5 humidity unit
6. Battery
1. To replace the battery, make sure the device is switched off.
2. Open the battery compartment at the back using an appropriate
screwdriver.
3. Take out the old battery and replace with a new and identical 9 V
battery following the polarity markings inside the compartment.
4. Close the battery compartment.
Warning: Do not puncture batteries or throw them in fire as they
may explode. Do not attempt to recharge non-rechargeable
batteries (alkaline). Dispose of batteries in accordance with local
regulations. Keep batteries away from children.
7. Operation
1. Press the on-off button for 1 second to switch on the meter.
2. Briefly press the on-off button to switch on the backlight.
3. Hold the sensor close to the source to be measured. The display shows
the measured value.
4. Press the °C/°F button to select the temperature measurement unit.
V. 01 – 07/05/2015
DEM501
5 setting button
6 backlight button
7 on-off button
8 battery compartment
6 current reading
7 temperature unit
8 temperature reading
9 auto power off
10 dew point
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