Modern desgin similar as a cell phone. Beautiful Frame CHROME creates elegant life. Acrylic lenses to avoid the finger scrath. Touch Button makes simple operation. Large screen display with backlight is easy to read�??even in the dark. Four periods program schedules maximize comfort and economy. One-touch temp control overrides program schedule at any time. Precise comfort control keeps temperature within 0.5°C of the level you set. Internal and external sensor selectable is suitable for any place.(optional) Data memory when power is off. (optional) Easy installation. 86mm hidden box and european 60mm round box is available. Material ABS, PC Power Supply 95V-240V / 50-60Hz Setting Temperature Range 5-60 Celsius Degree Current Load 3A (Water Heating), 16A (Electric Heating) Accuracy +-1 Celsius Degree Sensor NTC Timing Error < 1 percent Size 86mm x 86mm x 13.3mm Installation 86*86mm or European 60mm round box Room Temperature Range 5-35 Celsius Degree We are professional in provide OEM and ODM service.