Fire-Lite W-H355R SWIFT Intelligent Rate of Rise (135°) Wireless Heat Detectors with B501W Base

Designed for rapid, reliable fire detection in commercial and industrial settings, the Fire-Lite Alarms by Honeywell W-H355R wireless heat detector delivers actionable alerts to reduce risk and downtime. This SWIFT intelligent heat detector combines a fast-response thermistor sensor with a factory preset 135°F (57°C) fixed-temperature threshold and a 15°F/min rate-of-rise algorithm to detect both slow and rapidly developing fires. As an addressable device, the W-H355R communicates via a robust 902–928 MHz cascading mesh network, enabling flexible placement, repeaters for extended coverage, and seamless integration with Fire-Lite FACPs such as MS-9200UDLS and MS-9600(UD)LS or ES-series panels. Battery-powered with four CR-123A cells included, it’s an ideal choice for retrofit installs or areas where hardwiring is impractical. The detector supports security and life-safety monitoring, improving surveillance and incident response while minimizing nuisance alarms. For reliable fire protection that integrates with your existing security and networking infrastructure, specify the Fire-Lite W-H355R for new builds, renovations, and critical monitoring applications.

• Faster fire detection that shortens response time: thermistor sensing with 135°F fixed alarm and 15°F/min rate-of-rise capability helps protect people and assets.
• Wireless SWIFT integration for simple installation and expansion: cascading 902–928 MHz mesh networking lets devices act as repeaters for reliable site-wide coverage.
• Addressable monitoring and panel compatibility: integrates with Fire-Lite control panels (MS-9200UDLS, MS-9600(UD)LS, ES-50X/ES-200X) for precise event reporting and faster incident management.
• Battery-powered flexibility: ships with (4) CR-123A batteries for independent operation in areas without dedicated wiring, ideal for retrofit projects.
• Reduced maintenance and clear diagnostics: designed for commercial environments to simplify testing, surveillance, and ongoing monitoring workflows.