Raytek raycmlt offers the cm sensor is intended to measure target temperatures ranging spanning from, 20 to 500 c, 4 to 932 f . The cm s onboard electronics are protected by a rugged ip 65 nema, 4 stainless steel housing, Allowing the sensor to function in ambient temperatures to 70 c 160 f without cooling. Although small in size, The cm is loaded with advanced features. A two, Way rs232 digital interface allows the user to configure all programmable sensor variables with thedatatemp multidrop software included with each sensor. These include a 24vdc alarm output triggered by target temperature or head, Peak hold valley hold, Ambient temperature or variable averaging signal processing, Adjustable target emissivity settings and adjustable window transmissivity setting. The built, In sensor health led provides a convenient on, Line indicator of the sensor s operating status and aids in troubleshooting initial sensor set up.