3pcs Electronic DIY Kit MQ-2 Smoke Sensor Detector Natural Gas Alarm Components Kit

Description Working voltage DC5V 6VMain components MQ 2 smoke sensor LM358 integrated chipFunction Detecting liquefied gas propane hydrogen natural gas and other combustible gases When flammable gas is detected the red light is on the buzzer sounds and the relay acts The three are activated at the same time The probe needs to be warmed up for 1 minute so it will work normally after 1 minute of power on Module size 36 59mmThe module outputs a switching signal that can be controlled up to 220V 10A Package included 3 x PCB board3 x MQ2 sensor3 x active buzzer3 x 8P chip holder3 x LM358 chip3 x 5V relay6 x KF3 96 2P terminal block3 x 5MM green LED6 x 5MM red LED6 x 8050 triode3 x 10K adjustable resistor horizontal3 x 10 ohm resistor12 x 2 2K resistor18 x 10K resistor3 x 104 monolithic capacitor