Kit includes a wireless door/window transmitter and a wireless chime receiver
Transmitter activates when the door or window is opened, sends a wireless signal to the receiver and sends another signal when the door or window is closed
Ideal for small businesses, stores, workshops, and churches
Features self-programming to ensure no interaction from neighbouring systems
(3) C alkaline batteries required for receiver, not included
CR2032 lithium battery included for the door/window transmitter
Size: 25 inches wide x 4.5 inches high x 1.75 inches deep