Features: Boasting a powerful 120dB alarm and integrated flashing LED lights, this 12V screw on security alarm systems delivers immediate attention grabbing alerts with waterproof durability for outdoor/indoor protections. Featuring multi voltages compatibility (12V/24V/220V) and abrasion resistant ABS metal housing, the alarm combines power option with weatherproof construction for year round operations in harsh conditions. Ideal for homeowners, property managers, and business owners seeking comprehensive security solution, it effectively safeguards residences, offices, retail stores, and apartment complexes. Perfect for entry points, warehouses, and commercial spaces, this expandable alarm syncs with CCTV cameras and door sensors to create layered defense systems against intrusions. Engineered with protections and screw on mounting flexibility, this double purpose alert light device ensures effortless installation while maintaining 120dB loud warnings even in noisy environments. Specifications: Component: ABS, Metal Alarm Volumes: 120dB voltages: 12V, 24V, 220V Size:Approx.47mm/1.85''x54mm/2.13'' Package Includes: 1Piece Security Alarm note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.