Gray/white Wireless Entrance Alert Kit

Wireless entrance alarm. Alerts you when someone, or something, enters or exits through the monitored zone. Compatible with all Heath Zenith wireless doorbell chimes and buttons. Includes a battery operated doorbell chime and battery operated door/window sensor. Doorbell chime requires (3)AA batteries, not included. Door/window sensor requires (1)CR2032, included. The chime can connect with up to 10 Heath Zenith wireless doorbells at a time. Features a transmission range of 150-feet, a strobe effect, adjustable volume up to 85dB, and 10 melodies to choose from. Includes 1 wall anchor and double-sided tape for mounting.