Sensor for flame wavelengths between 760 nm to 1100 nm infrared is most sensitive A module has two outputs: An analog output, real-time output voltage signal on the thermal resistance D, digital output when the temperature reaches a certain threshold, the output high and low signal threshold adjustable via potentiometer 60-degree detection sensor Detection Distance Up To 100 cm (indoor) This product comes in a safe and secure packaging. It is designed as per the prevailing industry standards, it scores high on the aspect of utility. The quality material used in It's construction makes it durable.