Silent Knight SK-PTIR-W Multi-Criteria Detector, White

For facilities that demand reliable, code-compliant fire detection with minimal disruptions, the Silent Knight by Honeywell SK-PTIR-W multi-criteria detector delivers advanced protection and fewer nuisance alarms. This combination detector uses photoelectric, thermal and infrared sensing together with sophisticated algorithms to detect real fires faster while rejecting common false triggers. The SK-PTIR-W is UL 268 7th Edition and UL 521 listed and supports analog communications for seamless integration into existing security and fire monitoring systems. With 32V DC operation, low standby current, rotary addressing and dual LEDs for 360° visibility, the detector is simple to install and maintain in ceiling-mount applications. Its ability to indicate distinct smoke and heat alarms lets you configure local smoke notifications and broader evacuation alerts—helping reduce unnecessary evacuations and operational downtime. Ideal for commercial buildings, healthcare, education and surveillance-centered facilities, the SK-PTIR-W balances sensitivity and selectivity for effective fire detection across demanding environments. Contact us to specify the SK-PTIR-W for your next security or fire monitoring project.

• Accurate multi-criteria detection that combines photoelectric, thermal and infrared sensors to reduce false alarms and improve real fire sensitivity
• UL 268 7th Edition and UL 521 listed for code-compliant fire protection in commercial security and monitoring systems
• Dual LEDs and 360° visibility with rotary address switches for quick installation and clear local indication
• Low standby current and 32V DC operation for reliable integration with analog communications panels and low-power installations
• Robust nuisance-rejection algorithms ideal for high-traffic or challenging environments (theaters, kitchens, mechanical rooms) to minimize disruptions