● CO & HCHO:electrochemistry;Temp.& Humidity:CMOS;VOC:MEMS metal oxide sensor
● temp.:0~50℃;humidity:0~100%;CO:0~500ppm;HCHO:0~5ppm;VOC:0~10ppm
● 0~1V/0~5V/0~10V/1~5V/0~20mA/4~20mA
● 8~35VDC/12~30VAC
● Remote monitor by RS-485 (Modbus RTU).
● With exposed sensor to raise sensitivity of CO.

Measuring range 
CO:0~500ppm
Temp.:0~50℃
Humidity:0~100%
HCHO:0~5ppm
VOC:0~10ppm
Linear Accuracy(at +23℃;V=24VDC)
CO:±3% of f.s.(best zero)
Temp.:±0.3℃
Humidity:±3% of f.s.
HCHO:±5% of f.s
VOC:±5% of f.s
Output
Analogue output:0~1V/0~5V/0~10V/1~5V/0~20mA/4~20mA
ModBus:RS-485(programmable)
Signal connection
3-wire
Power supply
8~35VDC/12~30VAC
Protection degree
housing:IP54
probe:IP 20