Mighty Mule FM231 Wireless Driveway Alarm Creamy formula spreads like spackling

Creamy formula spreads like spackling and does not shrink

Hand wheel allows wrench-free installation

resulting in a clean cut every time

minimal head width improves performance in confined spaces

Mighty Mule FM231 Wireless Driveway Alarm Creamy formula spreads like spacklingThe Mighty Mule FM231 Wireless Driveway Alarm Instantly alerts you when someone pulls into or out of your driveway. The outdoor electromagnetic sensor only detects vehicles; no false alarms due to animals, children, etc. When a vehicle passes by the sensor, an outdoor transmitter communicates wirelessly to an internal base station up to 400 ft. away and sounds a pleasant chime. Easy to install Electromagnetic Sensor Wand is buried next to your