For easy arming and disarming of your AAA+ Home Smart Center home security system, make sure each member of your family has a remote transmitter. Using the Keychain Remote for AAA+, you'll be able to arm and disarm the alarm system, initiate a silent panic alert, and even control another connected component. Up to five different Keychain Remotes can be programmed to control the AAA+ Home Smart Center home security system, which is sold separately. # Keychain transmitter # Alkaline 12-volt battery # Instructions