1) Input signal: Thermocouple 2) Accuracy: ± 1%F. S. ± 1.5%F. S. 3) Law of regulation: Two - phase style, time proportion adjustment style 4) Temperature range: 0oC - 400oC 5) Output: Relay AC220V 3A resistance 6) Power source: AC 110V/220V/380V 50/60Hz 7) Outer dimension: 72*72*115mm 8) Hole dimension: 68*68mm