MQ-4 Gas Sensor Module

From the shop's description

MQ-4 Gas Sensor Module The MQ-4 Gas Sensor Module is a highly sensitive and reliable device engineered to detect methane (CH₄) and natural gas concentrations in the air. Employing a gas-sensitive semiconductor sensor, this module delivers exceptional sensitivity to methane, ensuring rapid response and recovery times. It serves as a critical component in gas leak detection systems, industrial safety applications, environmental monitoring setups, and smart home devices. Features: The gas sensing material used in the MQ-4 gas sensor is tin dioxide (SnO2) with low conductivity in clean air. It adopts high quality double panel design with power indication and TTL signal output indication It has DO switch signal (TTL) output and AO analog signal output The TTL output valid signal is low. (When the output is low, the signal light is on, it can be directly connected to the MCU or relay module) The voltage of the analog output, the higher the concentration, the higher the voltage. It has good sensitivity to gas and natural gas detection. there are four screw holes for easy positioning; product dimensions: 32 (L) * 20 (W) * 22 (H) has a long service life and reliable stability quickly response recovery characteristics The digital output D0: With the help of the potentiometer placed on the reverse side of the board, set is the threshold above which the output D0 is changed from a high to a low status. The output D0 can be linked directly with a microcontroller or commissioning set, including Arduino, or for example, with a module of a buzzer which will signal too low or high level of gassing the air. Analog output A0: The sensor has an analog output A0 which must be connected to the pin of the converter A/D (of analog input in Arduino). This will allow you to measure the proportional voltage signal and more accurately determine the concentration. Pin Configuration: VCC : Power supply input (5V DC). GND : Ground. AO : Analog output, providing a voltage signal proportional to gas concentration. DO : Digital output, delivering a high or low signal based on the set threshold. Specifications: Detection of gas: Natural gas/Methane Detection of Concentration:300-10000ppm Input voltage: DC5V Power consumption (current): 150mA Power supply: from 2.5 V to 5 V Analog and digital output Pins: Pin connectors, 2.54 mm pitch Board sizes: 32 (L) * 20 (W) * 22 (H) It has mounting holes with diameter: 2 mm Application: Detecting methane gas leaks in residential and commercial settings. Monitoring methane levels in industrial environments for safety. Environmental monitoring to track methane emissions. Automotive systems to monitor exhaust gases. Integration into smart home safety systems. Package Include: 1x MQ-4 Gas Sensor Module. Data Sheet: MQ-4 Gas Sensor