Target: CH2O, HCHO, Formaldehyde
Model: ZE08-CH2O
Detection range: 0~5ppm
Detection principle: Module,electrochemical
Characteristics: Portable detector, air-quality monitor, air cleaner, air renewal system, air conditioner, smart home.
Size: 23x25x4.4mm
Working conditions: Resolution ≤0.01ppm
Response time ≤60seconds
Working life 5 year (In the air)

ZE08-CH2O Manual download
Get Price Whatsapp


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.


Portable detector, air-quality monitor, air cleaner, air renewal system, air conditioner, smart home.


  • High sensitivity & resolution
  • Low power consumption
  • Long life UART/Analog Voltage/PWM wave output
  • Good stability, excellent ability of Anti-interference
  • Temperature compensation 
  • Excellent Linear output


Model No. ZE08B-CH2O
Target Gas CH2O
Interference Gas Alcohol, CO, etc.
Output UARToutput (3V Electrical Level)
Working Voltage 3.7V~5.5V( With voltage reverse connect protection)
Warm Up Time ≤3 minutes
Response Time ≤60s
Resume Time ≤60s
Detection range 0~1.6ppm
Resolution ≤0.01ppm
Operating Temperature 0℃~50℃
Operating Humidity 15%RH-90%RH(No condensation)
Storage Temperature 0~25℃
Working Life 2 years (in air)

* The description and specifications might be changed without notice. Please contact us for the latest information before placing orders.

Technical Support:

Customized technical design and function, LOGO and package are available without extra charge (including molding fee) for mass volume.

The sensors don't have sleeping mode. It can be set in program if needed.

All Winsen products go through strict inspections and tests to make sure they are 100% qualified before shipping out.

The sensor has been fully tested (not calibrated) before leaving the factory. However, after transportation and storage, the environment conditions change, and the surface of the sensor absorbs moisture, mixed gas, pollution matters, etc. It is recommended that customers perform aging and calibration after sensors become stable according to the program and use occasions of the whole device.

15﹪-90﹪RH without condensation,greater or less than this range or long-term high temperature and high humidity will affect the life of the sensor.

Our sensors are certified with CE, 3C, ROHS, anti-explosion, fire prevention, and coal mining safety according to different applications. And we provide assistance for new certification.

Many factors can cause the sensor to fail such as broken wires in transportation, poisoning, falling off of the sensitive material, damage to the heating wire (device), etc. Please find specific cause in each category with Winsen’s aftersales.

Winsen provides professional consultation and service before and after sales. We will recommend the best fitting sensor for your demand. If you have any problem, don’t hesitate to email us to

Due to high volume of daily incoming emails and time zone difference, we may not be able to reply your emails immediately. But we will reply to your inquiry in 24 business hours.