1、With simple and clear LCD display screen on the body,the radiator thermostat is with LCD digital display screen. And 2 x AA batteries powered(not included). 2、Artificially set indoor temperature, mainly used in the floor heating system to control the closing and opening of the pipe. 3、Widely applied to the heating of residences, shopping malls and hotels, the temperature control of central air conditioners, and the temperature control of separate rooms. 4、The shell adopts high‑quality flame retardant PC material, which is durable and wear‑resistant, and has a long service life. 5、The App can be remotely controlled anywhere, and the temperature of the room can be controlled in real time through the APP. 6、The vacation mode and rest days support independent setting of temperature. It is a special valve using cooperatively with heating radiator. 1 x Radiator Actuator(Battery Not Included)1 x Bag of Accessories(7pcs)1 x English Manual Item Type: Radiator ActuatorMaterial: PCColor: As shown in the pictureProduct Size: Approx. 9x 5.2x 3.8cm / 3.5x 2.0x 1.5in Weight: Approx.182g/ 6.4ozBattery: 2 x AA battery, 1.5V alkaline battery(Not included)Maximum Current: 90mAWorking Environment Temperature: -10~60°CDisplay Accuracy: 0.5℃Default Temperature Adjustment Range: 5~35°CProbe Sensor: NTC (10k) 1%Range of Temperature Display: 1-70°CRated Current: 1.5 (V)Ambient Temperature: 3-35 (℃)Maximum Stroke: 4.5mm / 0.18inModel: RSH-RV01Type: Smart radiator valveSeries: for zigbee 3.0 radiator valveNumber of Holes: 1Hole Distance: Approx. 30x 1.5mm / 1.18x 0.06inInstallation and Use: 1. Open the knob on the top of the valve, and put the corresponding type of battery into the main cover according to the positive and negative marks of the marks. 2. After power on, the screen will display all for 3 seconds, and then set the time as needed. 3. Weekly programming settings:(1). 5+2 six-period weekly planning.(2). 6+1 six-period weekly planning.(3). Program design in 7 days and 6 time periods.