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:1 x PCB board1 x MQ2 sensor1 x active buzzer1 x 8P chip holder1 x LM358 chip1 x 5V relay2 x KF3.96-2P terminal block1 x 5MM green LED2 x 5MM red LED2 x 8050 triode1 x 10K adjustable resistor horizontal1 x 10 ohm resistor4 x 2.2K resistor6 x 10K resistor1 x 104 monolithic capacitor
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