Internal embedded cold-junction compensation.Have USB port to do configuration.Signal input type, temperature range are programmable through software. Universal RTD TC thermocouple signal input, 2-wire 4-20mA output.12-35V wide range supply.Support 2-wire, 3-wire, 4-wire RTD PT100/CU50 input, ohm signal input. Support all the thermocouple signal input, type K, J, T, S, N, R, E, B etc. Standard head-mounted package. Refined frosted external shell, -retardant material. High performance in withstanding shock, vibration, external interference, etc. In with all the PLC, temperature controller, meter, etc. Industrial grade operating temperature range: -40 to +85 Signal input: Thermocouple or 2-wire RTD, 3-wire RTD, 4-wire RTD. Output: 2-wire 4-20mA current. Output current limit: 20.3mA supply: 12-35VDC, 0.2mA excitation current. Measuring Accuracy: 0.5% TC input, 0.2% RTD input. Temperature Drift: less than equal 25ppm/ F.S. Excitation current: 0.20.01mA Load capacity: 250or 500 Protection circuit: Reverse polarity connection protection. Software programmable: Yes, have programming usb cable, configuration software (English). Support : Not supported Operating temperature: -30-+80 temperature: -40-+120 Installation:M4x2 screw, standard head-mounted. Material:plastic colour:blue Package Contents: 2 x Temperature Transmitter 1 x USB Config Cable Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.