- Insert a coin, screwdriver, or other tool in the indention on the side of the sensor to pry off the top face plate.
- Remove the battery and replace it with another CR2032 coin cell battery.
- Place the face plate back on the sensor. Make sure the rubber O-ring is properly seated and the two posts on the bottom of the sensor are aligned with the holes in the face plate.
- The face plate should snap back into place, making a complete seal with the bottom of the sensor along the outside perimeter. The LED light should blink, indicating that the battery is correctly oriented and powering the sensor.
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