... , wireless transmitting distance up to 300 feet (Keychain remote, smoke sensor, & siren) and up ... system by: Main Host (Keypad), Wireless Keypad, Keychain remotes, or even remotely by phone. 6. ... 8 hours. 12.Battery (alkaline) included for keychain remotes, wireless door sensor, and wireless motion ... 50°CBasic Kit Contains:…Keypad / Control Unit ~1 pc. …Keychain Remotes ~2 pc. …Door / Window Sensors ~1 pc ...