Multi-control modes for refrigeration, defrost, and fan. Differential control mode with 0.1 temperature display resolution. Features multiple protection and alarm functions. Digital display with three-digit LED, minus digit, and status indicator lights for refrigeration, defrost, and fan settings. Separate user and administrator menus for ease of operation and advanced configuration. Model number: STC-9200. Measurement range: -50 to 90°C. Setting range: -50 to 50°C. Accuracy: ±1°C (-40 to 50°C), ±2°C (50 to 70°C). Supply voltage: 220Vac, 110Vac, 50/60Hz; 12Vac/dc, 24Vac/dc. Power consumption: Less than 5W. Output types: Three mechanical relays. Input types: Two NTC. Panel size: 75 x 34.5 mm. External dimensions: 75 x 34.5 x 85 mm. Perforation dimensions: 71 x 34.1 mm. Control: ON/OFF. Control setting: Touch switch. 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: STC-9200 freezer temperature controller, defrost thermostat, freezer thermostat. Temperature controller. Display type: Digital. Usage: Household. Power type: AC/DC. Style: Standing. Color: Black. Material: Plastic. Package contents: 1 x STC-9200 Digital Temperature Controller. Only the items listed above are included. Note: Lighting and display differences may cause slight color variations between the product image and the actual item. Measurement error allowance: ±1–3 cm.