Fangrui Product Details 1. Smart Home Screenless Knob Thermostat With Dual Color Led Indicator 2. Features: 3. Strict Temperature Control Accuracy (+- 1 Degree Celsius), Providing The Warmth You Want. 4. Ultra-thin Embedded Panel, Visible Thickness On The Wall Is Only 12.4mm, Perfectly Fits All Kinds Of Walls. 5. Compatible With Standard 86mm Square Box And 60mm European Box, Meeting All Installation Environments. 6. Knob Temperature Adjustment, Simple Operation, Smooth And Delicate Touch, Giving You An Excellent Experience. 7. Two-color Led Atmosphere Light Design, The Use Status Is Clear At A Glance. 8. Specifications: 9. Voltage Range: 95-240v Ac, 5060hz Or 24v Dcac, 5060hz 10. (please Check The Laser Printed Information On The Back Of The Thermostat For The Actual Voltage) 11. Current: 5a (water Heating, Waterboiler), 16a (electric Heating) 12. Sensor: Ntc3950, 10k 13. Accuracy: +-1 Degree Celsius 14. Set Temperature Range: 0-35 Degrees Celsius 15. Ambient Temperature: 0-45 Degrees Celsius 16. Ambient Humidity: 5- Rh (non-condensing) 17. Storage Temperature: -5 To 45 Degrees Celsius 18. Power Consumption: Less Than 1.5w 19. Time Error: Less Than 20. Housing Material: Pc + Abs (fireproof) 21. Mounting Box: 86 X 86mm Square Or European 60mm Round Box 22. Wire Terminals: 2 X 1.5 Mm2 Or 1 X 2.5 Mm2 23. Protection Level: Ip20 24. Button: Rotary Knob