VOXCOM Alarm Sirens Early warning for you. And a would-be intruder. VOXCOM alarm sirens function in two different yet very important ways. They can alert even the soundest sleeper that there is trouble. They can scare away a would-be burglar. Another level of security for you and your family: 110 decibels will wake even the soundest sleeper in case of an emergency Alarms sirens are connected to all of your security points. If a secured window is opened, the alarm will sound A loud siren can act as the first line of defense in deterring an intruder from going any further. Safety is a choice. Make your home VOXCOM safe. Ask for it by name.