Features:  Mobilephone APP remotes control: After install this intelligent thermostat and connect with the Tuya APP, you can achieve remotes control, you can control the thermostat anywhere.  Voice control: You can use it with the intelligent voice assistant like Alexa and Google Home to achieve voice control, free your hands.  Automatically adjust the backlight brightness, when not in use, will automatically dim after 30 seconds to save energy.  This digital temperature controller adopts microcomputer control technology and is equipped with full-screen display touching buttons, which is elegant in design and easy to use.  The thermostat has manual automatic, programmable, away mode, home mode and state memory functions.    Specifications:  Material: ABS+PC  Type: i8HGA, i8HGB, i8HGC, i8HGE (optional)  Screen: LCD  Load current:  i8HGA, i8HGC: 3A  i8HGB: 16A  i8HGE: water heating 3A+, linkage, gases boiler 3A  Control accuracy: ±1℃  Temperature: 5~60℃ (upper limit adjustable）  Input voltage: AC 95~240V 60Hz  Item size: 86 * 85 * 40mm / 3.4 * 3.3 * 1.6in  Item weight: 155g / 5.5ounce  Package size: 97 * 90 * 50mm / 3.8 * 3.5 * 2.0in  Package weight: 185g / 6.5ounce    Note:  i8HGA for water heating, i8HGB for electric heating, i8HGC for gases boiler, i8HGE for water heating+linkage gases boiler.    Packing list:  1 * Temperature Controller (Optional)