Specifications:- Input:- RTD (Pt-100), Thermocouples (‘J’, ‘K’, ‘S’, ‘‘R’) etc. Range:- As per your application. Indication:- Seven Segment LED 3.5 Digit ½” Size. Accuracy of Indication:- ± 0.5% of FSD ± 1 Digit Control Accuracy:- 1ºc Nominal (Can Be Adjusted). Relay:- Contact Rating 5Amps/250VAC/12VDC Operating Temperature:- 0ºC to 50ºC Supply Voltage:- 230VAC ± 10%