EXTECH INSTRUMENTS
3
FM300-en-GB_V1.9 3/17
Meter Description
Button Description
SET Button:
Set date and time
Audible Alarm ON/OFF (SET + MODE)
Alarm Limit Adjustment
Short press to switch AM/PM
SEL/Recall Button:
Move to next digit
Short press to save current reading
Press and hold to recall stored reading
o
C -
o
F - %RH
▲
Button:
Increase a value
Press and hold to switch temperature units
MODE
▼
Button:
Decrease a value
Review Maximum and Minimum reading
Review TWA-STEL
Meter Description
1.
Top LCD display for HCHO (CH
2
O) ppm readings
2.
Middle LCD display for RH% and temperature readings
3.
Bottom LCD display for Time and Date
4.
LED indicator light (Red, Orange, Green)
5.
Push-buttons (detailed above)
6.
Power adaptor jack
LED Indicator Description
Each time a reading is manually stored, the LED flashes green
When the high alarm is tripped, the LED flashes red and the audible beeper sounds
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