Edwards Signaling 5520D-AW 5520D Series Duotronic Horn/Siren Diode Polarized, High dB

Deliver loud, dependable audible alerts where safety and quick response matter most. The Edwards Signaling 5520D Series Duotronic horn/siren is a high‑decibel security alarm engineered for commercial, industrial and campus environments that require monitored signaling and robust evacuation capability. With a 124 dB sound emission and 24V DC low‑current operation, the 5520D provides clear, long‑range warning while conserving panel power. Its diode‑polarized circuitry supports supervised field wiring for accurate monitoring and reduced nuisance trips, and the tamper‑proof internal switch lets you select horn or siren modes without extra hardware. Installation is fast and reliable using the universal Adaptaplate, which snaps to the signal after field wiring is completed, and the unit can be weatherproofed with the Edwards 349 back box for outdoor or harsh‑environment use. Ideal for schools, factories, warehouses and critical infrastructure, this Edwards Signaling horn/siren integrates seamlessly into fire, security and surveillance systems to enhance alarm visibility and system reliability. Specify the 5520D for clear, durable audible protection — order today for your next security or evacuation project.

• Ensures audible warnings cut through high-noise environments with 124 dB output for reliable evacuation and alarm signaling
• Diode‑polarized design enables supervised circuits for simplified monitoring and reduced false alarms
• Switchable horn or siren via tamper‑proof internal switch gives flexible configuration for paging, alarm or evacuation modes
• Low‑current 24V DC operation minimizes panel load and simplifies integration with existing security and fire systems
• Universal Adaptaplate and optional 349 back box speed installation and weatherproof outdoor mounting to lower labor costs