This sensor is an infrared thermometer for contactless temperature measurements. Both the IR sensitive thermopile chip and the ASSP signal conditioning are embedded in the TO-39 box. Thanks to its low noise amplifier, its 17 bit ADC and a potent DSP unit, a high precision and resolution of the thermometer are achieved. The thermometer is calibrated at the factory with a PWM and SMBus (System Management Bus) digital output. The 10 bit PWM is set up to constantly transmit the temperature measured in a range of -20ºC … 120 ºC with an output resolution of 0.14 ºC as standard. The POR factory default value is SMBus. It is constructed from to 2 chips: The infrared thermopile detector. The signal conditioning is specially designed to process the output of the IR sensor. The device is available in a standard package of the TO-39 industry. It offers a high precision and resolution of the thermometer. The calculated object and the environment temperature are available in the RAM memory with a 0.01 °C resolution. They can be accessed with a protocol compatible with a series 2-wire SMBus (resolution of 0.02 °C) or with the 10 bit PWM (Pulse Width Modulated) output of the device. This sensor is calibrated at the factory with wide temperature ranges: -40ºC … 125 ºC for the environment temperature and -70ºC … 380 ºC for the temperature of the object. The measured value is the average temperature of all the objects in the field of vision of the sensor. The standard precision is ± 0.5 ºC around the environment temperatures. There is a special version for medical applications that offers a precision of ± 0.2 ºC in a temperature range limited around the body temperature.