System Sensor 5601P 135°F Heat Detector Rate-of-Rise

System Sensor 5601P 135°F Fixed Temperature and Rate-of-Rise Single-Circuit Mechanical Heat Detector with Plain Housing

The System Sensor 5601P is a single-circuit mechanical heat detector designed to provide dependable fire detection in environments where smoke detectors may not be suitable. Combining 135°F (57°C) fixed temperature activation with rate-of-rise detection, the 5601P responds quickly to rapidly increasing temperatures while also activating when the fixed temperature threshold is reached.

Featuring a plain white housing, the 5601P is ideal for residential and light commercial installations where a discreet appearance is preferred. The restorable rate-of-rise sensing element allows routine field testing without damaging the detector, while the external alarm indicator provides a clear visual indication after activation.

Part of the proven System Sensor 5600 Series, the 5601P offers simple installation with a reversible mounting bracket, easy-to-use SEMS screw terminals, and compatibility with a wide range of electrical back boxes, making it suitable for both new installations and replacement projects.

Key Features

• Single-circuit mechanical heat detector

• 135°F (57°C) fixed temperature activation

• Rate-of-rise detection (approximately 15°F per minute)

• Plain white housing for residential applications

• Restorable rate-of-rise sensing element for field testing

• External alarm indicator drops upon activation

• Reversible mounting bracket

• SEMS screw terminals for quick wiring

• Supports 14 to 22 AWG wiring

• Compatible with multiple electrical box types

• UL 521 listed

• Genuine System Sensor heat detector

Applications

The System Sensor 5601P is ideal for:

• Residential buildings

• Garages

• Utility rooms

• Mechanical rooms

• Boiler rooms

• Warehouses

• Commercial buildings

• Industrial facilities

• Areas where smoke detectors are unsuitable

• Conventional fire alarm systems

Specifications

• Manufacturer: System Sensor

• Model: 5601P

• Product Series: 5600 Series

• Product Type: Mechanical Heat Detector

• Circuit Type: Single Circuit

• Housing Color: Plain White

• Detection Method: Fixed Temperature and Rate-of-Rise

• Fixed Temperature Rating: 135°F (57°C)

• Rate-of-Rise Threshold: Approximately 15°F (8.3°C) per minute

• Maximum Installation Temperature: 100°F (38°C)

• Operating Humidity: 5% to 95% RH, non-condensing

• Contact Ratings:

  • 6 to 125 VAC: 3 A

  • 6 to 28 VDC: 1 A

  • 125 VDC: 0.3 A

  • 250 VDC: 0.1 A

• Wiring Capacity: 14 to 22 AWG

• Dimensions:

  • Diameter: 4.57 inches (116 mm)

  • Height: 1.69 inches (43 mm)

• Weight: 6 oz (170 g)

• Mounting Compatibility:

  • Single-gang back box

  • 3.5-inch octagon box

  • 4-inch octagon box

  • 4-inch square box with square-to-round plaster ring

• Compliance: UL 521

Why Choose the System Sensor 5601P?

The System Sensor 5601P delivers reliable heat detection in environments where smoke detection may not be practical. By combining 135°F fixed temperature sensing with restorable rate-of-rise technology, it provides fast response to rapidly developing fires while allowing routine testing without replacing the detector. Its simple installation, durable mechanical design, and broad mounting compatibility make it a trusted choice for residential, commercial, and industrial fire protection applications.