This Honeywell motion detector from Honeywell is completely wireless and is the ideal security add-on for the Honeywell RCWL300, RCWL330 and all Decor series chimes. For additional security purposes and an elevated peace of mind, the RCA902N will alert you when someone approaches your home. This unit is also fully capable of monitoring movement within specific rooms in your home. An abundance of creative options and a sensing range of 40 ft make the RCA902N an excellent purchase for home and small business owners alike. Range can be extended with the purchase of the RPWL3045 converter for use with Honeywell door chimes. Adding a motion detector to your business is a great way to get an audio cue when patrons enter your store, or use it as part of your security system to trigger lights or a camera. A modular design lets you sync it to a variety of sensors or chimes, allowing you to create a custom system that suits your needs. Wireless functionality provides a great deal of latitude when deciding where to mount it.