digital thermometer STC-100A microcomputer temperature controller

The panel size: 77mm (width) x 34.5mm (high) Size of mounting hole: 71mm (width) x 29mm (high) The size: 77mm (width) x 34.5mm (high) * 65mm (deep) Sensors: NTC sensor 1, K=10K + 2.5%, B=3435 Measuring range: -40 ~ 70 ℃; Measurement accuracy of ± 1 ℃; Control range: -40 ~ 70 ℃; Power supply: 220VAC, 50/60Hz; Relay: 10A/250VAC, (normally open output, can be directly driven single Phase 300W/220VAC and the following load)