System Sensor 5601P 135F Fixed Temp/Rate-of-Rise, Single-Circuit Mechanical Heat Detector with Plain Housing

Designed for reliable, low-maintenance fire protection, the System Sensor 5601P is a single-circuit mechanical heat detector that combines a 135°F fixed-temperature element with a restorable rate-of-rise (ROR) sensor. This hybrid design gives facilities dependable protection against slowly developing smoldering fires and rapid temperature spikes — improving alarm accuracy for security and monitoring systems. The ROR activates at approximately 15°F (8.3°C) rise per minute and can be reset for routine field testing, reducing service calls and keeping your life-safety infrastructure online.

The 5601P installs easily into single-gang, octagonal or 4-square back boxes (with adapter) and features a reversible mounting bracket for flush or surface-mount applications. Its plain white housing blends into residential and light-commercial interiors while offering a visible post-activation collector for quick identification of activated units. Compatible with wired alarm networks and backed by a 3-year limited warranty, the 5601P is ideal for fire protection, security, and building monitoring projects. Add the System Sensor 5601P to your next installation for dependable heat detection—contact us for availability and bulk pricing.

• Reliable early fire detection with both 135°F fixed-temperature and restorable rate-of-rise (15°F/min) elements for faster response to fast-developing fires
• Simple, cost-effective installation: single-circuit mechanical design with reversible bracket that mounts to single-gang, octagonal or 4-square back boxes
• Discreet white plain housing to blend into residential or light-commercial environments while supporting wired monitoring and security systems
• Visual post-activation collector clearly indicates triggered units for faster inspection and maintenance after an event
• Field-testable ROR element and easy-to-use terminal screws reduce service time and minimize downtime
• Backed by a 3-year limited warranty for long-term reliability in life-safety and fire protection applications