Feature: 1. MODERN DESIGN: The smart thermostat features two way rotating knob buttons for a silky feel and artistic ambience to make the interior look more beautiful. Adapt your decor to create a comfortable feel for your home or office 2. EASY TO USE: With a user friendly 1.81in TFT screen and intuitive knob control, the thermostat can be easily programmed and adjusted for temperature settings. Enjoy fast processes without any technical expertise 3. SMART VOICE CONTROL: Connect your knob thermostat to your smart home system, adjust the temperature using your smartphone or voice commands anytime and anywhere, and enjoy the convenience of remote control 4. UNIQUE AMBIENCE LIGHT: Knob thermostat allows you to switch color ambience apertures at will. By adjusting the function area, the color of the unreal image ambiance aperture changes synchronously with the color of the function area 5. ACCURATE CONTROL: Smart thermostats allow you to set and maintain the exact temperature you want with unmatched accuracy. Say goodbye to fluctuating temperatures and enjoy consistent comfort in your home or office Specification: Item Type: Smart Knob Thermostat Model: 1439WTC Shell Material: PC and ABS (fireproof) Power Supply: 95-240V AC, 50-60Hz Current Load: 3A (water heating) App: For Tuya App Accuracy: ±1℃ Set Temperature Range: 5-35℃ Room Temperature Range: 5-99℃ Display Temperature Range: 5-99℃ Operating Temperature: 0-45℃ Operating Humidity: 5-95%RH (non condensing) Storage Temperature: -10-45℃ Power Consumption: <1.5W Timing Error: <1% Protect Level: IP20 Mounting Box: 86 x 86mm / 3.39 x 3.39in square box or 60mm / 2.36in round box Terminal Block: 2x1.5mm² or 1x2.5mm² wire Knob: Rotating Knob Voice Control: Support. Package List: 1 x WiFi Thermostat 2 x Installation Screws 1 x User Manual