Fangrui Product Details 1. W-1213 Intelligent Digital Display Fish Tank Climbing Pet Thermostat Planting Hatch Breeding Temperature Controller 2. Suitable For Central Air Conditioning, Baby Room, Hot Water Machine, Greenhouse Fruit And Vegetable Planting, Hatching And Breeding Fish Pets, Aquaculture, Etc. 3. Intelligent Timer Temperature Controller, Four-button Control, Simple Operation, Small Size 4. The Bottom Shell Is Made Of Abs Flame-retardant Material, Which Is Safer To Use 5. High-precision Temperature Control, Temperature Measurement Accuracy To 0.5 Degrees Celsius 6. Working Frequency: 50hz 7. Shell Material: Abs For The Front Shell, Flame Retardant Abs For The Bottom Shell 8. Temperature Range: -40 To 120 Degrees Celsius 9. Working Voltage: Ac110-220v 10. Sensor Line Length: 100cm 11. Size: 79.5x43x35mm 12. Weight: About 78g 13. Precautions: 14. Do Not Allow Water Or Liquids Or Sundries To Immerse Into The Smart Thermostat 15. Non-professionals Do Not Disassemble 16. Pay Attention To The Wiring Terminals At The Back When Powering On, And Be Careful Of Electric Shock 17. N And L Are Ac 110-220v Power Supply, Do Not Use Dc Power, The Control Output Terminal Can Be Connected To Dc Equipment