This remote keypad is wireless and is powered by a single 9-volt battery. It can be used to add extra keypads around your home to arm, disarm, or put the alarm in panic mode.
The unit is 100% wireless. That means there are no wires to install and installation is a snap.
You may use an unlimited number of any combination of add-ons. However, the base unit (SSC-ALM1) is REQUIRED for any of the add-ons to function.