Multiple control modes for cooling, defrosting, and fan operation. Differential control mode with a temperature display resolution of 0.1. Multiple protection and alarm modes for enhanced safety. Digital display: Three-digit LED + Minus sign + Status indicator light (indicating cooling, defrosting, and fan). User menu and administrator menu can be set separately, offering convenience for users and ample space for advanced management adjustments. Model Number: STC-9200 Measuring Range: -50 to 90 C Setting Range: -50 to 50 C Accuracy: 1 C (-40 to 50 C), 2 C (50 to 70 C) Voltage Supply: 220Vac, 110Vac, 50/60Hz; 12Vac/dc, 24Vac/dc Power Consumption: Less than 5W Output Types: Three mechanical relays Input Types: Two NTC Panel Size: 75x34.5 mm External Dimensions: 75x34.5x85 mm Perforation Dimensions: 71 10x29 10 mm Control: ON/OFF control Setting: Touch button Front Panel IP Rating: IP65 Operating Temperature: 0 to 55 C (32 to 131 F) Operating Humidity: 20% to 85% RH, non-condensing Storage Temperature: -25 to 75 C (-13 to 167 F) Alias Names: STC-9200 freezing temperature controller, defrost thermostat, freezer thermostat :Temperature controller Display Type: DIGITAL Usage: Household Power Type: Charger Style: Standing station Color: Black Material: Plastic Package Contents: 1 x STC-9200 Digital Temperature Controller Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.