The DP4000 is a long-range motor driven siren suitable for large schools, industries and malls, as it covers an area of approximately 4000m² / 43,000ft² (linear dispersion of 1000m / 3,280ft). With the structure injected in ABS, it is immune to corrosion. The connection can be made directly to a switch, using a bell switch, or the Siren Controller DPSIN. DIPONTO MOTOR SIREN: Heavy-duty motor siren by DiPonto, always providing you with the equipment you need for your projects. Secure your home or business with our security alarm, specs: net weight of 5.3 lb, dimensions (mm) 180 x 220 x 160 DURABLE, HIGH QUALITY MATERIALS: Made with high quality materials that will provide you with an excellent alarm system for many years. ABS-injected structure, it is immune to corrosion, making it ideal for audible alerts in schools and industries. 1 year factory warranty. EXCELLENT ALARM PERFORMANCE: Up to 120dB @ 1m. It covers an area of approximately 43,000ft² (4000m²). MULTIPLE APPLICATIONS: Suitable for residential buildings, offices, factories, schools, shops, hotel, public places and others.