The quality of the ABS plastic box  ensures high reliability  and durability of the siren MATERIAL: ABS Plastic TYPE: With Strobe SERVICES Supply,Installation,Verification & Maintenance OFFERED: SIZE: Big / Small COLOR: Red FEATURES: The quality of the ABS plastic box� ensures high reliability �and durability of the siren an integrated siren that connects directly to the bell output of any panel The design of the mounting surface facilitates installation in a wide variety of configurations With Strobe Supply,Installation,Verification & Maintenance