This round versatile siren/strobe is a highly effective way to alert to unauthorized use, theft or vandalism, as well as unwarranted exits and entries. The combination of alarm and bright flashing LEDs offer excellent protection for a variety of urgent situations, and help attract immediate attention to the area. Ideal for wall, ceiling or cabinet mounting, Select-Alert is available in six colors, 32 selectable sounds with volume control, eight selectable strobe flash patterns with speed selection. Unit has a 12-24 VDC power supply is provided with a backup battery.