PID temperature controller 1) Multi input 2) Dual 4 digits display with 7segments LED 3) dual output 4) RS485 interface Temperature Controller SpecificationCH102: 48 ... 50/60Hz or 20-28Vac/dc 50/60Hz types of input: thermocouple (8types), RTD (3 types), DC current (2 types) and ... output: Relay contact 5A 250Vac (resistive load)Main Features1) Universal input: a) Thermocouple: K, J, R, S, B, E, N, T ...