Target: CH2O, HCHO, Formaldehyde
Model: ZE07-CH2O
Detection range: 0~5ppm
Detection principle: Electrochemical,Modle
Characteristics: High sensitivity & resolution& Good stability
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ZE07-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 a combination of mature electrochemical detection principle and sophisticated circuit design.


Portable detector, air-quality monitor device, air fresher, fresh air ventilation system, air-condition, smart home device &etc.


  • High sensitivity & resolution& Good stability
  • Extremely low power consumption
  • UART/Analog Voltage/PWM wave output
  • Excellent ability of Anti-interference
  • Temperature compensation
  • Excellent Linear output


Model No. ZE07-CH2O
Target Gas CH2O
Interference Gas Alcohol, CO &etc.
Output Data DAC(0.4~2V standard voltage output)
UART Output(3V Electrical Level)
Working Voltage 3.7V~9V (No 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)

* 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 UL, 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.