Dsc SD-20W 20 Watt Dual-tone Siren

Product Description

The DSC SD-20W is a 20-watt dual-tone siren designed for use in security alarm systems. It produces two distinct tones to provide a clear audible alert when an alarm event is triggered. The unit is a boxed siren intended for hardwired installation as part of a broader intrusion detection or perimeter alarm setup. Licensed security system technicians and alarm installers are the primary trade professionals who specify and install this device. At 20 watts of output power, the SD-20W delivers sufficient sound pressure to serve as an effective deterrent and notification device in residential and light commercial applications.

The SD-20W is suited for installation in residential homes, small commercial buildings, and other properties where a wired audible alarm output device is required. It is typically connected to a security control panel that triggers the siren output upon zone activation. The dual-tone capability allows installers to differentiate alarm types or simply maximize audibility in the protected space. This siren is sold individually as a single unit.

Key Features

• 20-watt output for strong audible alarm coverage
• Dual-tone operation provides two distinct alert sounds
• Hardwired design integrates directly with security control panels
• Sold as a single boxed unit for straightforward inventory and installation
• Compact form factor appropriate for both residential and light commercial installs

Compatibility

Designed as an OEM-style wired siren accessory for use with compatible hardwired security alarm control panels that support an external siren output.

Installation Notes

Installation should be performed by a licensed alarm or low-voltage electrician in accordance with applicable local codes and NFPA 731 guidelines. Power down the security control panel and disconnect the backup battery before wiring the siren output terminals. Follow the control panel manufacturer's wiring diagram for proper siren loop connection. Avoid mounting the siren in locations exposed to direct water ingress unless the enclosure is rated for that environment.