Gold Series single-wavelength infrared temperature sensors are available in a range of short, long and specialty wavelengths. The sensors measure the amount of infrared energy emitted by an object's surface and then convert this signal into a temperature value between -40 °F and 4500 °F (between -40 °C and 2475 °C). Each model can be used as a stand-alone transmitter with a choice of inputs, outputs and alarms. For more advanced capabilities, interface modules, PID controllers and PC software programs are available.