Ecolink WST-232 Wireless Door/Window Sensor

Step-by-Step Instructions:
1. Slide the top cover to disengage it from the sensor, then remove it to reveal the battery. (Removing the cover will trigger a zone tamper signal to the control panel.)
2. Replace with a CR2032 battery ensuring the + side of the battery faces towards you.
3. Re-attached the cover, ensure the Top (as marked on the inside of the cover) points away from the battery. You should hear a click when the cover engages properly.

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