ZE07A-CH2O electrochemical formaldehyde module is a general-purpose and miniaturized module. Using the electrochemical principle to detect CH2O in the air has good selectivity and stability. Built-in temperature sensor for temperature compensation; at the same time, it has digital output and PWM output, which is convenient to use. ZE07A-CH2O is a general-purpose gas module designed and manufactured by closely combining mature electrochemical detection technology with sophisticated circuit design.

ME3-CH2O formaldehyde sensor is a constant-potential electrolytic sensor. Formaldehyde and oxygen undergo a corresponding redox reaction on the working electrode and the counter electrode and release charges to form a current. The generated current is proportional to the concentration of formaldehyde. By testing the size of the current The level of formaldehyde concentration can be determined.

The ME2-CH2O-16×15 formaldehyde sensor is a fuel cell electrochemical sensor. Formaldehyde and oxygen undergo corresponding redox reactions on the working electrode and the counter electrode and release charges to form a current. The generated current is proportional to the concentration of formaldehyde. Following Faraday's law, the level of formaldehyde concentration can be determined by testing the magnitude of the current.