Under normal use, the battery in the transmitter will last about 2 years. For battery replacement, use a Panasonic® 3 volt, type CR2032, or equivalent.
| 1.1. | Insert a dime between the 2 halves of the transmitter near the key ring hole. |
| 1.2. | Twist the dime. |
| 2.1. | Align the top and bottom covers. |
| 2.2. | Press together the top and the bottom covers. |
| 2.3. | Inspect the operation of the transmitter. |