Features: 1With simple and clear LCD display screen on the bodythe radiator thermostat is with LCD digital display screen. And 2 x AA batteries powered(not included). 2Artificially set indoor temperature mainly used in the floor heating system to control the closing and opening of the pipe. 3Widely applied to the heating of residences shopping malls and hotels the temperature control of central air conditioners and the temperature control of separate rooms. 4The shell adopts highquality flame retardant PC material which is durable and wearresistant and has a long service life. 5The App can be remotely controlled anywhere and the temperature of the room can be controlled in real time through the APP. 6The vacation mode and rest days support independent setting of temperature. It is a special valve using cooperatively with heating radiator. Specification: Item Type: Radiator ActuatorMaterial: PCColor: As shown in the pictureProduct Size: Approx. 9x5.2x3.8cm / 3.5x2.0x1.5in Weight: Approx.182g/6.4ozBattery: 2 x AA battery 1.5V alkaline battery(Not included)Maximum Current: 90mAWorking Environment Temperature: -10~60CDisplay Accuracy: 0.5Default Temperature Adjustment Range: 5~35CProbe Sensor: NTC (10k) 1%Range of Temperature Display: 1-70CRated Current: 1.5 (V)Ambient Temperature: 3-35 ()Maximum Stroke: 4.5mm / 0.18inModel: RSH-RV01Type: Smart radiator valveSeries: for zigbee3.0 radiator valveNumber of Holes: 1Hole Distance: Approx. 30x1.5mm / 1.18x0.06inInstallation 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. Package List: 1 x Radiator Actuator(Battery Not Included)1 x Bag of Accessories(7pcs)1 x English Manual Note: 1. Please allow 1‑2in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.