Smart Thermostat for House Water Electric Heating Water Gas Boiler AC thermostat with VA Digital Touch Screen and Adjustable Knob 5+1+1 Weekly Programming/Manual/Auto/Holiday Mode Features: AC Thermostats for Home: Smart thermostat with 3 types: GA: 5A, water heating; GC: 5A, water/gas boiler; GB: 16A, electric heating. They have with WiFi and without WiFi two options. It's ideal to control electric underfloor, water heating or water/gas boiler system. Widely used in home, commercial, industrial, ect. Safe and Durable Material: Digital thermostat made from fire retardant ABS panel and highly transparent acrylic VA display, protect your eyes. IP20 waterproof, resistant to scratches and oil stains. 8 dynamic background lights, showing working status from multiple angles. Easy to Install and Use: Thermostat for house with convenient buckle installation, no tools required. Ultra-thin embedded panel perfectly fits all kinds of walls. The visible thickness on the wall is only 13.1mm. Large knob with large touch screen, more convenient operation and setting. Multiple Programming Mode: Programmable thermostat with 4 modes: manual mode, auto mode, weekly programming mode and holiday mode. Preset 5+1+1 mode weekly programming setting, 6 time periods can be programmed every day, low cost and eco-friendly. High Accuracy and Safety Protection: Strict temperature control accuracy (±1°C) provides the warmth you need. With power off protection, safely save all settings. High voltage protection and child lock mode. APP and Voice Assistant Control: WiFi thermostat can be controlled via smart phone and voice assistant. Support groups and sharing, to achieve unlimited centralized control of the number of thermostat. Support window opening detection reminder, better care for your temperature control environment.(only for WiFi option) Specifications: Color: Black / White (optional) Type: Water heating / Water/gas bolier / Electric heating (optional) Style: with WiFi / without WiFi (optional) Model definition: GA: 5A, water heating; GC: 5A, water/gas boiler;  GB: 16A, electric heating Main Material: ABS + Acrylic Voltage: 95~240VAC 50~60Hz Current: 5A(water heating/water/gas boiler) , 16A(electric heating) Sensor: NCT 10K Temperature error: ±1℃ Time error: <1% Temperature control range: 5～35℃. Normal working environment temperature/humidity: -5～45℃, 5～95%RH (no condensation) Power: <1.5W Waterproof: IP20 Size: 130*88mm/5.1*3.5in Package List: 1 * Thermostat 2 * Screw 1 * Manual