Eld sensor magnet you don't have to worry

you don't have to worry about using all your I/O ports because it comes with a built-in Wi-Fi module

It operates on only 3

Operating temperature:-40 ~85

1 x Sensitive microphone sensor module KY-037

Arduino Mega2560 protective case black

Eld sensor magnet you don't have to worryA sensor designed to detect open flame or fire quickly and accurately, with a fixed response time and high light sensitivity. It runs on 5V, has a peak wavelength of 940nm. With its high reliability and low voltage operation, you can trust that the Fire Sensor will detect any fire. The sensor is very sensitive to IR light Specifications: Package type: leaded Dimensions: 5mm Leads with stand off Peak wavelength: ? p = 940 nm High reliability Fixed