Display mode: 4-digit 7-segment LED control mode: ON / OFF control, P, PI, PD, PIDF, PIDS control input specifications: Thermocouple: K (CA), J (IC), E (CR), T ( CC), R (PR), S (PR), N (NN), W (TT) RTD: DPt100Ω, JPt100Ω Analog: 1-5VDC, 0-10VDC, DC4-20mA Sampling period: 500ms Control output: relay ( 250VAC ~ 3A)