Two sensors work with one receiver. Perfect if you have two places need to be monitered.
No matter which sensor is triggered, the receiver will get a alert signal and alarm.
Protect Home Garden Garage Shed Business Warehouse Aircraft Hangar Secret Place Space And Anywhere That You Need, Protect Your Privacy
Portable receiver has three settings: high or low chimes and off
The transmitter requires 3xAAA 1.5V batteries and receiver requires 3xC 1.5V batteries