You can use a flame sensor module to detect the presence of heat around a 100cm radius. It detects the infrared waves and gives a positive signal based on the filter setting.
It has four pins. Two are for supplying power, and the other two pins are for detecting positive or negative signals. You can use a trimmer to set the proper filter value.
You can use it in Arduino microcontroller boards and other simple project kits.
We deal in Arduino boards, Robotic parts, and other electronic sensors and modules. You can call our number or visit our website to place your order.