This thermostat range has been developed to control electric underfloor or water heating or water/gas boiler system. These units are designed for use in commercial, industrial, civil and domestic properties. Features: The temperature controller is equipped with touch buttons and a large LCD backlit display that is easy to operate and easy to read even in the dark. Programmable through the app program, press the button for more than 5 seconds to set the time and temperature for the desired (5+1+1) six time periods. Pre-set temperatures maintained within +/-1. Uses one-click and sets itself to an Eco Temperature to save energy. Internal and external sensors allow control of both air and/or floor temperatures. Suitable for installation in a standard single pattress box or European 60mm round box. Specifications: Model: TP818WHP / TP818UHP / TP818GC / TP818WHPW / TP818UHPW / TP818GCLW (Optional) Type: Wi-Fi / No Wi-Fi (Optional) Shell Material: PC+ABS (flame retardant) Sensor: NTC Accuracy: ±1 Power Consumption: 1.5W Timing Error: < 1% Power Supply: 95-240VAC, 50-60Hz Current Load: 5A (water heating, water/gas boiler), 16A (electric heating) Ambient Temp: 0-45, 5-95%RH (Non-condensing) Storage Temp: -5-55 Installation Hole Distance: 60mm Item Size: 130 * 83 * 40mm / 5.12 * 3.27 * 1.57in Item Weight: 229g / 8.07oz Package Weight: 282g / 9.94oz Package Size: 15 * 10.5 * 6.3cm / 5.91 * 4.13 * 2.48in Package List: 1 * Temperature Controller 2 * Screws 1 * User Manual (English)