Hold Function; Data Record Function; Auto Power Off; Battery Replacement - Extech Instruments EN300 User Manual

Changing °C / °F units
During temperature measurements, press the °C / °F button once to change the temperature units
from "°C" to "°F".

Hold Function

Press the "Hold Button" to freeze the current reading value, "HOLD" symbol appears on the display.
Press the button again to continue normal operation.

Data Record Function

1. The Data Record function records & displays the maximum and minimum reading values. Start
the Data Record function by pressing the "Max/Min Button" once. The "REC" symbol appears
on the display.
2. With the REC symbol on the display :
(a) Press the "Max/Min Button" once and the "Max" symbol along with the maximum value
will appear on the display.
(b) Press the "Max/Min Button" again; the "Min" symbol along with the minimum value will
appear on the display.
(c) To exit the memory record function, press the "Max/Min Button" continuously for at least 2
seconds. The display will revert to the current reading.
(d) Clear the Max/Min value recorded by pressing the "Hold Button" once. Previous recorded
Max/Min values will be erased and then return to REC function and continue recording.
Auto Power-off
To prolong the life of the batteries, the instrument has an "Auto Power-off" function. The meter will
automatically switch off if there are no button presses in any 10-minute period.

RS232 port

The RS232 port is used to send measurement data to a PC.

Battery Replacement

1. When the LCD display shows "
measurement may still be made for several hours after the low battery indicator appears.
2. Remove the two battery cover screws and remove the battery cover.
3. Install fresh batteries DC 1.5 V battery, UM4/AAA x 6 PCs, and reinstall the cover.
You, as the end user, are legally bound (Battery ordinance) to return all used batteries
and accumulators; disposal in the household garbage is prohibited!
You can hand over your used batteries / accumulators at collection points in your
community or wherever batteries / accumulators are sold
Disposal: Follow the valid legal stipulations in respect of the disposal of the device at the
end of its lifecycle
" symbol, it is necessary to replace the battery. However,
7 EN300-EU-EN v1.3 4/14