Can be used alone or connected with alarm system. Both addressable type and non-addressable type Easy to Operate & Install Essential choice of siren for your fire safety systems MATERIAL: ABS Plastic TYPE: Square/With Strobe SERVICES Supply,Installation,Verification & Maintenance OFFERED: SIZE: 86mm x 12mm x 63mm COLOR: Red FEATURES: Can be used alone or connected with alarm system. Both addressable type and non-addressable type Easy to Operate & Install Essential choice of siren for your fire safety systems Square/With Strobe Supply,Installation,Verification & Maintenance