Nortek Security Control FM231 Wireless Driveway Alarm

Product Description

The NORTEK SECURITY CONTROL FM231 is a wireless driveway alarm that uses electromagnetic technology to detect vehicles entering or exiting a driveway. When a vehicle passes the sensor, an indoor chime unit alerts the occupant. The system operates at up to 400 feet of range between the outdoor transmitter and the indoor receiver. Sensitivity is adjustable from 3 to 12 feet radius, giving installers control over detection width. The transmitter is powered by two AA batteries, not included. Lithium or alkaline AA batteries are recommended for cold-climate installations.

This unit is suited for residential driveways, gated entries, and light commercial parking area monitoring. It is designed to detect metal vehicle mass only and will not trigger on pedestrians or animals, reducing false alerts. Dip switches on the transmitter allow personalized transmission codes, which is useful when multiple units are installed in proximity. Installation is straightforward and does not require low-voltage wiring, making it accessible to security technicians, electricians, or knowledgeable property owners.

Key Features

• Electromagnetic detection technology targets vehicles only — does not detect people or animals
• Up to 400 feet of wireless range from outdoor sensor to indoor receiver
• Sensitivity adjustable from 3 to 12 feet detection radius
• Dip switch transmission codes prevent interference between nearby units
• Indoor chime provides audible alert when a vehicle is detected
• Transmitter runs on two AA batteries; lithium types recommended in cold climates

Compatibility

Designed as a self-contained wireless driveway alarm system for residential and light commercial vehicle detection applications.

Installation Notes

Installation is performed by security technicians or licensed electricians following applicable local codes. Position the outdoor transmitter at ground level along the driveway edge where vehicles will pass reliably within the detection radius. No power shutoff is required for the wireless transmitter, but verify battery type is appropriate for the local climate before mounting. Confirm dip switch codes match between transmitter and receiver before finalizing placement.