Features: *High-Quality Material: The wireless thermostat is made of high-quality material, which is durable and wear-resistant, can be used for a long time and is not easy to break. *Programmable weekly plan selection: supports manual setting of 5+2, 6+1 and 7-day weekly plans, 6 periods on working days and 2 periods on rest days, supports different temperature settings and runs as planned. *Mobile phone remote control function: After the valves is successfully connected to the Apps, it supports remote control of the Apps through a smartphone and also supports hands-free voice control. *Two power supply methods: The smart radiator-valve is powered by 3 AA batteries (not included), with long battery life, long standby time, safe use, and also supports USB power supply. *Anti-frost function: When the temperature reaches the low temperature of the system, the anti-frost function will automatically turn on for a short time to prevent water pipes from freezing or bursting. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Shell Material: flames retardant PC Size: As Shown Two power supply methods: 3*AA batteries (not included), USB (Type-c-6p DC5V) Receiving power supply: AC95-240 50/60Hz Measurement accuracy: 0.1 DegreeC Setting temperature accuracy: 0.5 DegreeC Temperature setting range: 5~95C Operating temperature range: -5~50C Transmission distance: open airs Protection level: IP20 Wireless frequency: 433MHZ (FSK)/433MHz (two-way FSK) Parts List: Receiver*1 Thermostat*1 Instructions*1 USB cable*1 Screw*2 Package List: 1 x Receiver 1 x Thermostat 1 x Instructions 1 x USB cable 2 x Screw