Features 1、Designed to control heating system, easy to operate and program. 2、Large display screen with backlight, easy to read and touch buttons make simple operation. 3、Interlock to connect gives you easy installation. The visiable thickenss above the wall is only 13 mm. Specifications Overview: The thermostat will provide uniform and comfortable temperature control throughout every room in your property. We bring together technology, craftsmanship and the highest quality materials to provide you with a safe, reliable product combined with sleek, contemporary design. The BHT-2000L serial has been developed to control electric underfloor, water heating or water/gas boiler systems. These units are designed for heating control in commercial, industrial, civil and domestic properties. Features: Designed to control heating system, easy to operate and program. Large display screen with backlight, easy to read and touch buttons make simple operation. Interlock to connect gives you easy installation. The visiable thickenss above the wall is only 13 mm. 0.5°C Accuracy keeps temperature within the level you set. 5+2 six periods programmable maximize comfort and economy. Supports voice control, compatible with Amazon Echo/ Home/Tmall Genie/IFTTT. Data memory when power is off. A standard 86mm pattress box or european 60mm pattress box is suitable for installation (Box NOT Included). High-efficiency and energy-saving thermostat to help lower home energy costs. Made of flame retardant material, safe and reliable for daily use. All setting languages synchronize your time zone, address and language. Note: 1. GA is for water heating, GB is for electric heating, GC is for water/gas boiler, L indicates backlight, W indicates WiFi. 2. Please read the user manual carefully before installing and operating the thermostat. Specifications: Model: BHT-2000L Type: Thermostat for Water Heating/Electric Heating/Boiler (Optional) Power Supply: 95-240V AC, 50/60HZ Current Load: 5A (water heating, water/gas boiler); 16A (electric heating) Sensor: NTC3950, 10K Display: LCD with Backlight Buttons: Capactive Touch Buttons Accuracy: ±0.5℃ or ±1℉ Set Temp. Range: 5~35℃ Dispaly Temp. Range: 5~99℃ Ambient Temperature: 0~45 ℃ Ambient Humidity: 5~95 % RH (Non Condensing) Storage Temperature: -5~45 ℃ Power Consumption: <1.5W Timing Error: <1% Installation Box: 86 * 86mm Square or European 60mm Round Box (Not Included) Wire Terminals: wire 2 x 1.5mm² or 1 x 2.5mm² conservation Class: IP20 Shell Material: PC+ABS (Flame Retardant) Color: White, Black (Optional) Item Size: 86 * 86 * 13.3mm / 3.39 * 3.39 * 0.52in Package List: 1 * Thermostat 2 * Screws 1 * User Manual(English) Package List 1 * Thermostat 2 * Screws 1 * User Manual(English)