1[Programmable and Energy Saving] Programmable boiler thermostat, with multiple setting modes, which perfectly fits your weekly life plan and effectively saves energy. Designed for most wall mounted gas water heaters. 2[Blue Backlight and Real Time Display] The boiler thermostat with backlight has its own blue light, which is convenient for you to understand the display data in the dark. Support real time display of time and temperature. 3[Touch Button Design] The full touch screen is easy to operate, powered by two batteries (not included), and there is no need to install a power cord, so the digital thermostat can be directly connected to the heating boiler. 4[Convenient Installation] Dry contact is used, and there is no polarity, so the boiler thermostat is easy to install and does not require high installation technology. The short circuit problem of the dry contact wire will not affect the connected equipment. 5[Modern Appearance] Large screen and white simple shell, elegant and fashionable, widely used in bathroom, residence, shower room, bedroom, study, etc. In addition, its compact size does not take up too much installation space. Item Type: Thermostat Material: Plastic Battery: 2 x AA Batteries (Not Included) Voltage: 220V Accuracy: 0.5 Probe Sensor: 10K NTC Load Current: 5A (Boiler Heating) Adjustable Temperature Range: 5-35 Working Temperature: 1-70 Installation: Wall Mounted Product Size: Approx. 8.8x8.8x3.1cm / 3.5x3.5x1.2in Weight: Approx. 178g / 6.3oz 1 x Thermostat 1 x Installation Package (2 x Screws) 1 x Manual 1. Please allow 0& 8209;2 cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.