DSC WT4911B 2-Way Wireless Outdoor Siren with Blue Strobe

Protect entrances, perimeters and remote sites with a high-visibility, low-maintenance alarm solution. The DSC WT4911B 2-Way Wireless Outdoor Siren with Blue Strobe combines a powerful 105 dB audible alarm and a vivid blue strobe to deter intruders and deliver unmistakable visual notification for security teams and first responders. Designed for commercial and retail installations, this DSC siren provides two-way wireless communication (IMPASSA 433 MHz) for RF status reports, low-battery alerts and tamper notifications—so monitoring and maintenance become proactive rather than reactive.

Built for outdoor surveillance, the unit carries an IP34 rating and tamperproof construction with front and back tamper detection. Battery-powered operation offers approximately 2–3 years of service life, reducing ongoing costs and site visits. Additional features like temperature reporting to WT5500 wire-free keypads and a large print area for your company logo make this siren ideal for integrated alarm systems and branded deployments. Add the WT4911B to your security monitoring and alarm workflows to improve response times and site protection—contact sales to specify or order for immediate deployment.

• High-visibility deterrent: bright blue strobe plus a 105 dB siren draws immediate attention to alarms and reduces incident escalation
• Reliable wireless integration: 2-way RF communication with IMPASSA (433 MHz) enables remote monitoring, status feedback and simplified installation
• Tamper-resistant design: front and back tamper detection and tamperproof construction protect the device and reduce false alarms
• Weather-ready performance: IP34 rating keeps the siren operational in outdoor environments for perimeter and site protection
• Long battery life: up to 2–3 years of nominal battery operation lowers maintenance and service visits for large deployments
• Branding and serviceability: large print area for company logo and clear RF diagnostics for faster on-site commissioning