... battery not includedVoltage:6VSpecial Feature:130dB sound level, with door accessoryProduct Usage:Panic personal alarm, door alarm useExport Market:USA, Europe, Latin America, ... home, or hotels or dorm rooms. Acts as a portable door alarm! Warning:At close range the siren may cause ear ... joggers, women, child, elderly, disabled, night shift workers, alone people. Personal Alarm with Door Accessory