MQ-4 Gas Sensor Module

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