To replace the batteries, you will need 2 Lithium batteries and a 2.4mm Philips head screwdriver
REMINDER: If the Sensor is mounted with zip ties, you will need additional zip ties to re-install the device
1. Remove the Sensor from the piece of equipment
2. Unscrew the Sensor back plate
3. Remove and discard the drained batteries
4. Insert new Lithium batteries
5. Screw the back plate to the Sensor
6. Re-Install the Sensor in