Constructed of durable polycarbonate material, this blue alarm and strobe alerts to any unauthorized use, theft or vandalism of important devices, as well as unauthorized exits and entries. The combination of alarm and super bright flashing LEDs offers excellent protection for an array of circumstances as they draw attention in a hurry. This round shaped siren and strobe model will work in conjunction with push buttons, protective covers, as well as many other products. Can be used as a cabinet alarm, door alarm, link with push button/switch or as a burglar alarm.