With international popular options, high level quality and low level price: 1) Universal input: a) Thermocouple: K, J, R, S, B, E, N, Tb) RTD: Pt100, Pt1000, Cu50c) Linear signals: 0-20mA, 4-20mA, 0-5V, 1-5V2) Output: relay output, SSR logic output, mA/V output3) PID control4) Many alarm modes on your choice5) Auto-turning6) Automatic/manual modes selection7) RS485 interface with MODBUS/RTU protocol8) RAMP set point9) 24Vcc output for transmitter power10) Ambient environment: 0-50°C; humidity: ≤85%RH11) Available size: 48 x 48, 48 x 96, 96 x 48, 72 x 72, 96 x 96mmProduct size (width x height x depth):CH102: 48 x 48 x 110mmCH402: 48 x 96 x 110mmCH502: 96 x 48 x 110mmCH702: 72 x 72 x 110mmCH902: 96 x 96 x 110mmIf you have other optional functions requests, please contact us for further discussion. producing area:China payment:T/T, L/C at sight supplying capacity:20,000pcs/month