The main parameters
Parameters	Technical indicators
CO measurement range	0-1000ppm/0-2000ppm
Measurement method	electrochemical sensor
CO accuracy	<±3% of reading (25℃)
Warranty period	2 years for the whole machine (1 year warranty for probes)
Response time	generally less than 15 seconds
Baud rate	2400/4800/9600
Communication port	RS485
Power supply	12V-24V DC
Power consumption	≤0.15W (@12V DC, 25℃)
Operating temperature	-30-50℃ (-20-40℃ continuous)
Working humidity environment	15-90%RH
Working pressure range	0.9-1.1atm
Dimensions	110×85×44mm
Probe parameters and selection
No.	Probe type	Range	Resolution/Detectable lower limit	life
1K	domestic	1000ppm	500ppb	>2 years
2K	domestic	2000ppm	500ppb	>2 years
2KJ	imported Honeywell	2000ppm	10ppm	>2 years