Features - Color: Black - Material: ABS. - Size: About 8.6 x 8.6 x 1.32cm. - thermostat to control water heating system, with touch buttons for simple operation. - LCD display with backlight to display data clearly, easy to read even in the dark. - Weekly programmable and 5+2 six periods programmable to maximize comfort and economy, very flexible. - 1 C accuracy, keeping the comfortable temperature within the level you set. - Data memory function when power is off; thermostat locking function. - Acrylic face plate to protect the LCD screen from collision and avoid the finger scratch. - High-efficiency and energy-saving thermostat to help lower home energy costs. - Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand Specification - Display: LCD with Backlight - Sensor: NTC 10K 3950 - Power Supply: 95 ~ 240VAC, 50 ~ 60Hz - Current Load: 5A - Power Consumption: lt;1.5W - Accuracy: plusmn;1 C - Timing Error: lt;1% - Set Temp. Range: 5 ~ 35 C - Room Temp. Range: 5 ~ 99 C - Ambient Temperature: 0 ~ 45 C - Ambient Humidity: 5 ~ 95% RH (Non Condensing) - Storage Temperature: -5 ~ 55 C