The FM231‑R additional indoor receiver expands your wireless driveway alarm with clear chimes and LED alerts, so you’ll always know when a vehicle arrives. Designed for plug‑and‑play setup and boasting a 400 ft range, this compact receiver keeps you informed with its handy low‑battery indicator. Compatible with Mighty Mule wireless driveway alarm (model FM231 sold separately) for seamless system expansion. Emits a pleasant chime and bright LED light to announce vehicle arrivals up to 400 ft away. Low‑battery indicator alerts you when 2 AA batteries in the outdoor sensors need replacement. Simple plug‑in installation—just match the receiver codes and you’re ready to go. Compact, unobtrusive design fits any indoor space: garage, workshop, two‑story building, barn, and more. Backed by a 12‑month Mighty Mule warranty and full technical support for reliable performance. Installation Manual
