If you have ever wanted to be alerted when someone is coming up the driveway or someone enters the front door of your store; then this is the product for you. This is a two piece system with a receiver and a transmitter. The transmitter can be placed anywhere that you would like to detect movement. The receiver is placed in a location where you can hear the chime when motion is detected by the transmitter.
This is a simple, yet effective, system for keeping you alerted to the presence of anyone that would come near your location.
Dimensions:Transmitter: 4 1/2 inches x 2 1/2 inches x 2 1/2 inches.
Receiver: 4 11/16 inches x 3 1/2 inches x 1 1/2 inches.
Transmitter: 1-9 volt battery that is not included.
Receiver: 3-C batteries that are not included or a 4.5 volt adapter that is not included.