The Indicator accepts an industrial standard RTD Pt-100 (3 wire) temperature sensor and displays the actual temperature value calibrated in the desired units, on a linear scale. The temperature is displayed on a 4- Digit seven-segment LED digital display module. A two-wire temperature transmitter is built into the indicator, which converts the temperature reading into an accurate digital readout after linearizing the Sensor signal. A Power supply of 24VDC is required to power the temperature transmitter. The instrument is calibrated for a temperature range of -50 to +500 Deg. C as per DIN 43760.