This small but powerful signal repeater is just what you need when you have too much distance and not enough coverage between sensors and the main panel. This gives you that extra distance between the two in order to keep every space safe! Just place near the remote sensors and point the antenna towards your control panel to give you that added coverage. The repeater adds between 200 and 400 feet of coverage, depending on building materials and other conditions. Does not increase range of wireless sirens. When ordering with a Kit, please specify how many of each type of sensor you would like programmed to the Signal Repeater in the comments box before finalizing your order. If you do not specify, a programming sheet will be included so you can choose which sensors get programmed when you receive your order. Ex: Signal repeater: 5 door/window, 1 smoke, 1 motion, 1 glass break Uses a 110v wall adaptor.