It has a wireless radio frequency range of 300 feet. When triggered the RF signal activates the alarm. Uses one 9-volt battery (not included). Easily protect every window and door of your home. Dimensions 3 1/2" x 2 1/4" x 1"
Requires one 9 volt battery, not included, but I will sell you one AT MY COST of only $2.00! Simply place any eligible product* in your cart together with the 9v battery (one per product) and $1 will be automatically deducted per eligible product at checkout.
*Eligible products are any product requiring a 9v battery.