Principle Introduction:
ZE08-CH2O is a general-purpose and miniaturization electrochemical formaldehyde detection module. It utilizes electrochemical principle to detect CH2O in air which makes the module with high selectivity and stability. It is built-in temperature sensor to make temperature compensation. It has the digital output and analog voltage output at the same time. It is a combination of mature electrochemical detection principle and sophisticated circuit design.

Applications :
Portable detector, air-quality monitor, air cleaner, air renewal system, air conditioner, smart home &etc.

Technical parameters :

Tips:For more parameter information, please refer to the latest manual provided by salesman.

Model No.	ZE08-CH2O
Target Gas	CH2O
Interference Gas	Alcohol, CO &ect.
Output Data	DAC(0.4~2V standard voltage output )
Output Data	UART output(3V Electrical Level)
Working Voltage	3.7V~9V( With voltage reverse connect protection)
Warm up time	≤3 minutes
Response time	≤60s
Resume time	≤60s
Detection Range	0～5ppm
Resolution	≤0.01ppm
Operating Temp.	0～50℃
Operating Hum.	15%RH-90％RH(No condensation)
Storage temp.	0～50℃
Working life	2 years（in air）

Reference Circuit :

PIN	Instruction
Pin4	Vin（Voltage input 3.7V～9V）
Pin3	GND
Pin2	DAC (0.4～2V,for 0-5ppm)
Pin7	PWM
Pin1	HD (Zero calibration，only for factory use)
Pin5	UART（RXD） 0～3.3V data input
Pin6	UART（TXD） 0～3.3V data output

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