The electrochemical formaldehyde module is a universal and miniaturized module. The detection of CH20 in air using electrochemical principles has good selectivity and stability. Built in temperature sensor for temperature compensation; It has both digital output and analog voltage output modes, making it convenient to use.The electrochemical formaldehyde module is a universal gas module designed and manufactured by closely combining mature electrochemical detection technology with sophisticated circuit design.Product Model: SC11-CH20 Pin TypeGas detection: formaldehydeInterference gases: alcohol, carbon monoxide, and other gasesOutput data: UART output (3.3V level)/PWM outputWorking voltage: 4.2V-5.5VPreheating time: less than equal 3 minutesResponse time: less than equal 60 secondsRecovery time: less than equal 60 secondsRange: 0-2000 PPBResolution: less than equal 1 PPBWorking temperature: -20 ℃-50 ℃Working humidity: 15% RH-90% RH (non condensing)Storage temperature: 0-25 ℃Service life: 2 years (0 ℃-35 ℃ in air)Module size: Length 18mm x Width 18mmColor:As ShownMaterial:plasticPackage Contents:1 * Sensor Module