Module Cảm biến MQ-4 MQ4 Khí gas Metan

Module Cảm biến Khí gas Metan MQ-4Mô tả:MQ-4 Gas Sensor Module Methane Gas Detective SensorMethane Gas Detective Sensor MQ-4 Gas Sensor Module MQ-4 Gas Sensor Module Methane Gas Detective Sensor MQ-4Module Applications: Suitable for home or factory methane gas , natural gas and other monitoring devices to test natural gas, methane 300 to 10000ppm; Thông số kỹ thuật:Module Features : 1. Using high-quality dual-panel design, with power indicator and TTL signal output instructions ; 2. The switching signal having a DO (TTL) output and analog output AO ; 3. TTL output valid signal is low . ( Low-level signal when the output light can be directly connected to the microcontroller or relay module ) 4. The higher the voltage , the concentration of the analog output voltage is higher. 5. For methane, natural gas has a good detection sensitivity. 6. There are four screw holes for easy positioning ; 7. Dimensions : 32 (L) * 20 (W) * 22 (H) 8. Rapid response and recovery characteristicsElectrical properties: Input voltage: DC5V Power consumption ( current ): 150mADO output: TTL digital 0 and 1 ( 0.1 and 5V) AO output:0.1-0 .3 V ( relative to pollution ) , the maximum concentration of a voltage of about 4VSpecial note: After the sensor is power on, it needs to be warmed up around 20S, measured data can be stable , sensor become warm is a normal phenomenon. The instruction of Wiring: 1. VCC: positive power supply (5V) 2. GND: power supply is negative3. DO: TTL switching signal output4. AO: analog signal outputDocuments:DatasheetWiring Example