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Remove the battery cover and insert the CR123A 

battery provided into the Door Window Sensor 

according to the correct terminals. Blue LED will 

be blinking when the sensor is initialising.

Replace the battery cover when LED stops 

blinking.

Step 1

Use the wider double-sided adhesive tape to 

attach the transmitter to the edge of the door or 

window.

Position the magnet on the door or window frame 

so that the LED is off when the door or window is 

closed, and red when the door or window is open. 

The distance between the transmitter and magnet 

should not exceed 15mm.

Step 2

Step 3

Installation Steps

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15mm

15mm

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