Changing Measurement Units; Data Hold Function; Lcd Backlight; Max/Min Readings - Extech Instruments LT250W User Manual

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Operation
Do not touch or otherwise obstruct the sensor.
Do not allow liquids to come in contact with the sensor.

5.4 Changing Measurement Units

Short press the LUX / FC button to toggle the displayed unit of measure (Lux
or foot candles).

5.5 Data Hold Function

Short press the Data Hold (H) button to freeze/unfreeze the displayed read-
ings. While Data Hold is active, HOLD will appear on the LCD.

5.6 LCD Backlight

Long press the backlight button
Excessive use of the backlight will shorten battery life.

5.7 MAX/MIN Readings

When the device is switched on, it begins tracking the highest (MAX) and low-
est (MIN) readings.
Short press the MAX/MIN button to step through the MAX/MIN memories.
MAX will show when the Maximum reading is displayed and MIN will show
when the Minimum reading is displayed. The memories are cleared each time
the meter power is cycled.
Press the MAX/MIN button again to exit this mode (MAX and MIN symbols
switch off when you exit).

5.8 Bluetooth Operation

Long press the Bluetooth button
or off. This communication symbol
The Bluetooth utility allows you to remotely monitor readings on an iOS or An-
droid smart device using the Extech ExView mobile app designed for use with
this meter.
Download the ExView mobile app from the App Store for iOS devices or from
Google Play for Android devices. Instructions for mobile app use are available
from the ExView product page on the Extech website (link below).
#NAS100076; r. AA/78957/78963; en-US
CAUTION
to switch the display backlight on or off.
with the meter on, to switch Bluetooth on
is shown when Bluetooth is on.
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