9pcs Gas Detection Sensor Module MQ 2 3 4 5 6 7 8 9 135 Starter Kit

【Gas Detection Sensor Module】☆☆☆MQ-2 MQ-3 MQ-4 MQ-5 MQ-6 MQ-7 MQ-8 MQ-9 MQ-135 Sensor Module Gas Sensor Starter Kit☆☆☆Gas may be used in homes and factories leakage monitoring device suitable for the detection of gas, butane , propane , methane , smoke , etc. ; 【High performance】║✔Using high-quality dual-panel design, with power indicator and TTL signal output instructions;║✔The switching signal having a DO (TTL) output and analog output AO;║✔TTL output valid signal is low . ( Low-level signal when the output light can be directly connected to the microcontroller or relay module );║ 【Easy Operation】║✔Analog output voltage with the higher concentration of higher voltage;║✔A gas, natural gas, city gas , smoke better sensitivity;║✔There are four screw holes for easy positioning;║✔Has a long life and reliable stability;║✔Rapid response and recovery characteristics║☆☆☆Special note: After the sensor is powered , needs to warm up around 20S, measured data was stable , heat sensor is a normal phenomenon , because the internal heating wire , if hot is not normal☆☆☆. 【Specification】║✔Input voltage : DC5V Power consumption ( current ): 150mA; ║✔DO 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 4V;║PINS:✔VCC: positive power supply (5V);✔GND: power supply is negative; ✔DO: TTL switching signal output; ✔AO: analog signal output║ 【Packet Contains】☆☆☆║✔1pc x MQ-2 Sensor ✔1pc x MQ-3 Sensor ✔1pc x MQ-4 Sensor ✔1pc x MQ-5 Sensor ✔1pc x MQ-6 Sensor ✔1pc x MQ-7 Sensor ✔1pc x MQ-8 Sensor ✔1pc x MQ-9 Sensor ✔1pc x MQ-135 Sensor║☆☆☆, Weight: 0.220462262 Pounds, Manufacturer: TECNOIOT