1. Power down the Sensor

Power down the sensor by moving the switch to the OFF position. The dot by the switch represents OFF. Remove the mounting plate.

2. Remove the Batteries

Remove the batteries by pulling up the purple ribbon.

3. Installing New Batteries

Place the purple ribbon down making sure it covers the edge of the negative battery contacts circled below. Make note of the directionality the new batteries will be installed.

Install batteries in order as shown in the image below (starting with the battery closest to the anchored ribbon).

When installing each battery, first insert the negative (flat) side of the battery into the negative contact. Next, push the battery down against negative contact with your thumb to ensure the positive terminal is clear of the positive contact. Then push the battery in.

Once battery 1 is installed, follow the same procedure for the rest of the batteries in numerical sequence (2, 3, 4, 5, 6).

4. Inspect the Installation of the Batteries

Ensure no batteries were damaged during the installation process. An image of a proper installation is shown below:

5. Re-attach the mounting plate

Before attaching the mounting plate, fold the excess purple ribbon over the batteries. Re-engage the sensor to the backplate by aligning the tabs on the backplate with the slots on the sensor.

Apply force horizontally until the sensor and backplate are fully engaged.

6. Power on the Sensor and Confirm LED Activity

Power on the sensor by sliding the switch to the ON position (away from the dot). Visually observe a flashing red LED to confirm the sensor is powered up. If the LED does not flash, remove the sensor from the backplate and confirm the batteries were installed correctly.

7. Reinstall the Sensor in the Ceiling

Ensure the sensor is mounted exactly as it was originally. Location and orientation must be the same as prior to the battery change.

Battery Replacement Video