1. Multi-control modes: refrigeration, defrost, and fan. 2. Differential control mode; temperature display resolution: 0.1°C. 3. Multi-protection and alarm functions. 4. Digital display: three-digit LED with minus sign and status indicator lights (refrigeration, defrost, fan). 5. Separate user menu and administrator menu for operation and advanced configuration. Model number: STC-9200 Measurement range: -50°C to 90°C Setting range: -50°C to 50°C Accuracy: ±1°C (-40°C to 50°C), ±2°C (50°C to 70°C) Supply voltage: 220 VAC, 110 VAC, 50/60 Hz; 12 VAC/DC, 24 VAC/DC Power consumption: < 5 W Output types: Three mechanical relays Input types: Two NTC sensors Panel size: 75 × 34.5 mm External dimensions: 75 × 34.5 × 85 mm Cutout dimensions: 71 × 29 mm Control method: ON/OFF control Setting method: Touch switch Front panel IP rating: IP65 Operating temperature: 0°C to 55°C Operating humidity: 20% to 85% RH, non-condensing Storage temperature: -25°C to 75°C Product type: Temperature controller Display type: Digital Usage: Household Power type: External power supply Style: Panel-mount Color: Black Material: Plastic Package contents: 1 × STC-9200 digital temperature controller