Mighty Mule Driveway Alarm (FM231)

Mighty Mule Verified independent store

→

The Mighty Mule FM231 wireless driveway alarm delivers reliable, long-range vehicle detection so you can secure your property without a gate or complex setup. You’ll appreciate its DIY-friendly installation, clear indoor chime alerts, and the ability to expand coverage with extra receivers. Reliable electromagnetic vehicle detection senses mass-metal motion passing through your driveway Included indoor receiver emits a clear audible chime when a vehicle enters or exits Expandable system lets you add multiple FM231‑R receivers to cover larger properties and different locations Easy DIY installation with included mounting stake—bury the sensor beside your driveway and place the receiver where you need it Wireless connectivity reaches up to 400 ft between the outdoor transmitter and indoor receiver Battery-powered design runs on two AA batteries (not included) and features low‑battery indicators on both units Operates stand‑alone—no gate or gate opener required—and comes with a 12‑month warranty and dedicated technical support Show more