Edwards Signaling 302-ET-135 All-weather Heat Detector Rate Compensation, Vertical, Box Mount (½" NPT), FM and UL, 135 °F (57.2 °C)

Built for dependable fire protection in industrial and commercial security systems, the Edwards Signaling 302-ET-135 heat detector provides reliable temperature monitoring where failure is not an option. This rate-compensated, fixed-temperature heat detector is calibrated to activate at 135F (57.2C), helping differentiate true fire conditions from transient temperature changes to reduce nuisance alarms and speed response. The 302-ET-135 is hermetically sealed and self-restoring for low maintenance performance in wet, corrosive, or explosive atmospheres, and is available in a box-mount form with 1/2-inch NPT threads for straightforward installation into existing conduit or junction boxes. FM and UL listings deliver documented compliance for fire detection and security projects, while wired connectivity integrates seamlessly with fire panels, monitoring systems, and security surveillance networks. Ideal for manufacturing floors, warehouses, parking structures and hazardous locations, this Edwards Signaling heat detector enhances your fire monitoring and security strategy. Add the 302-ET-135 to your fire detection system to improve reliability, simplify maintenance, and meet code requirements.

• Reliable early fire detection in harsh environments to protect assets and reduce downtime
• Rate-compensated sensing minimizes false alarms and ensures faster response to real fire events
• Hermetically sealed, self-restoring design reduces maintenance and performs in wet, corrosive, or explosive atmospheres
• FM and UL listings give code-compliant performance for security and life-safety systems
• Box-mount with 1/2-inch NPT and rugged construction simplifies installation in industrial and outdoor monitoring applications