Digital LCD RF Wireless Heating Thermostat Temperature Controller for Wall hung Boiler Features: Adopted of high performance CPU, stable and reliable. Large LCD display, easy for reading. LCD blue backlight, high-grade and elegant. Memory function when power failure, protect your setting from power failure. Battery powered, easy to change. Pass safety and high reliability tests. Touch buttons to make simple operation 0.5°C accuracy keeps temperature within the level Children lock to prevent wrong operation by children 5+2 days programmable and it can be DIY programmable; 2 preset programmable modes for your choice,it is most convenient for your use. Holiday mode make you enjoy more comfortable temperature in holiday Specification: Power: 2 x AA 1.5V alkaline batteries (NOT included) Display accuracy: 0.5℃ Probe sensor: NTC(10k)1% Contact capacity: 5A Working environment temperature: 0~50°C Range of temperature adjustment: 5~35°C Range of temperature display: 0~40°C Output: Switch relay Insulating condition: Normal environment Running program: Set per 1 week as a cycle Installation: Wall mounted or on battery seat Weight: 286g/10.1oz Package list: 1 x Thermostat 1 x Receiver 1 x Set of Screws Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.