5v Ne555 Digital Delay Timer Relay Switch 0 To 10 Seconds KG093 (173) RGB LED It is important to note

It is important to note that the MQ-2 sensor is not selective for specific gas and may be triggered by other gases as well

Compatible with microcontrollers like Arduino and Raspberry Pi

when the humidity decreases

12 Volt Piezo Buzzer Plate (25mm)

touchless buttons

5v Ne555 Digital Delay Timer Relay Switch 0 To 10 Seconds KG093 (173) RGB LED It is important to noteNE555 Delay Timer The NE555 delay timer switch is manufactured for high performance timing and based on the NE555 chip. This delay switch module is a monostable switch module that finds itself very useful in vehicle based applications like delay to prevent car ignition. The NE555 delay timer switch module is constructed with a power indicator LED and switch trigger timing indication LED. This is a monostable generator based on the NE555 integrated