
 
The Boost button is used when you want to heat the room quickly. 
Press the button is activated Boost function for 5 minutes. During 
the 5-minute period the device will open the valve further to 
increase heating efficiency. The Boost time period will countdown 
on the LCD screen, you may press the Boost button again to 
cancel Boost function. 
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The device has default day temperature setpoint of 21°C and 
night temperature of 17°C. Press the button to toggle 
between default day or night temperature. 
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The device is usually installed at the corner of the room and near 
the heating pipe. As a result its temperature reading may deviate 
from room temperature at center of room. Use the Setpoint Offset 
function to compensate the deviation. 
To calculate setpoint offset, simply subtract room temperature 
with device temperature. 
For example: If device temperature is 20°C and room 
temperature is 18°C, then setpoint offset = 18 –20 = -2°C. 
After setpoint offset is applied, the device will operate according 
to adjusted temperature. 
For example: If device temperature reading is 20°C, setpoint 
offset is -2°C, the device will operate using 18°C as actual 
reference. 
To program Setpoint Offset: 
1. Press and hold the button for 3 seconds to enter offset 
adjustment. 
2. Rotate the Control Knob to desired offset temperature. 
3. Press any key to finish and exit offset adjustment. 
You may adjust Setpoint Offset remotely using the server and 
app. 
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If the device detects rapid temperature drops. It will assume the 
room window has been opened and will activate Open Window 
function by partly closing the valve to for 15 minutes to avoid 
unnecessary energy waste. The LCD will display icon. After 
15 minutes, the device will return to normal operation. 
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Anti-frosting: When frosting hazard is detected, the device will 
automatically open the valve for hot water to flow in order to 
maintain the temperature and to prevent further frosting. 
Anti-calcification: The device opens and closes the valve weekly 
to prevent calcification. During the process the LCD screen will 
display CAL. 
The device may disable all button and control knob function by 
pressing and holding both Auto / Manual and buttons for 3 
seconds. When locked down, icon will be displayed. To 
return to normal operation, press and hold both buttons for 3 
seconds again. 
The device uses two AA Alkaline 1.5V batteries as power source. 
It also features low battery detection function to notify the Control 
Panel when battery voltage is low. 
Battery Saving Guideline 
The device is wirelessly connected with the Control Panel at all 
time. When the device loses connection with the Control Panel, it 
will actively search for the Control Panel, which will consume extra 
power and greatly reduces battery life. In order to avoid 
unnecessary power consumption, please follow the guidelines 
below: 
1. Ensure the Control Panel is powered on before inserting 
batteries. Always learn in the device immediately after 
inserting batteries. 
2. Ensure the Control Panel is powered on and within signal 
range when the device is powered on. 
3. When you removed the device from the Control Panel, make 
sure to remove the batteries from the device too. 
 
 
 
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-10°C to 40°C, relative humidity 85% non-condensing. 
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