Add this additional receiver to the Mighty Mule wireless driveway alarm (model# fm231wb sold separately). this additional receiver will announce the arrival of a vehicle by a chime and LED light. This receiver also features a low battery indicator light, notifying you when the 2Aa batteries (not included) need replacing in the outdoor receivers.
- Easy DIY (DO it yourself) installation for your property
- Alerts you with a chime when your visitors approach
- Alarm features a sensitivity adjustment to adjust to your comfort
- Backed by a 12-month Mighty Mule warranty and technical support