System Sensor 135F Fixed Temp/Rate-of-Rise 5601P, Single-Circuit Mechanical Heat Detector with Plain Housing
Sense the heat where smoke can't
A wired, single-circuit combination heat detector that responds to a fixed temperature or a fast temperature rise. Built for spaces where smoke detectors are unsuitable.

Some rooms are too harsh for smoke detectors.
Kitchens, garages and boiler rooms are typical places where smoke detectors are unsuitable. A heat detector gives those spaces fire detection that fits the environment.
Built for straightforward installs
The 5600 series offers a full line of configurations, and the 5601P is the single-circuit model with a plain housing.
Combination detection
Combines fixed temperature with a self-restoring rate-of-rise sensor that triggers at a 15°F (8.3°C) rise per minute.

Fixed temperature rating
The 5601P pairs this fixed rating with rate-of-rise detection.
Plain residential housing
The plain housing is intended for residential installations, in white.
Easy terminal screws
Easy to use terminal screws simplify wiring the detector.
Flexible mounting
A reversible mounting bracket works with a broad range of back box mounting options.
Everything you need to know.
| Brand | System Sensor |
| Model | 135F |
| Heat Detector Type | Combination (Fixed Temperature and Rate-of-Rise) |
| Product Series | 5600 |
| Rate-of-Rise Threshold | 15°F (8.3°C) rise per minute |
| Space Coverage | 50 Feet |
| Connectivity | Wired |
| Input Voltage | 120V AC |
| Installation Type | Residential |
| Color | White |
| Height | 1.7" |
| Weight | 6.00oz |
System Sensor 135F Fixed Temp/Rate-of-Rise 5601P, Single-Circuit Mechanical Heat Detect...
The System Sensor 5601P is a heat detection product: 135F Fixed Temp/Rate-of-Rise (Single-Circuit Mechanical Heat Detector with Plain Housing). It is intended for fire alarm installers, integrators and facility maintenance teams who need a genuine System Sensor part for new installs, expansions or replacements.
Key Features
- Multiple configurations for installations
- Single and dual circuit models
- Fixed temp and combination fixed. Temp/Rate of rise 135°F or194°F ratings
- Plain housing for residential installations
- Easy to use terminal screws
- A broad rance of back box mounting options
- Reversible mounting bracket
Specifications
- Brand: System Sensor
- Model: 5601P
- Product Model: 5601P
- Product Series: 5600
- Product Type: Temperature and Humidity Sensor
- Connectivity Technology: Wired
- Heat Detector Type: Fixed Temperature, Rate of Rise
- Color: White
- Form Factor: Box Mount
- Height: 1.7"
- Weight (Approximate): 6 oz
- Input Voltage: 120V AC, 230V AC, 28V DC
- Input Voltage (V AC): 120, 230
- Input Voltage (V DC): 28
- Limited Warranty: 3 Years
- Additional Information: 50 Feet Space CoverSelf Restoring Rate-of-Rise (ROR) SensorRate-of-Rise Threshold 15°F (8.3°C) rise per minute|Maximum Installation Temperature 100°F
- Shipping weight: 0.4 lb
Typical Uses
- Fire detection where smoke detectors are unsuitable, such as kitchens, garages and boiler rooms
- Commercial and residential fire alarm systems
Fire alarm devices must be installed and tested by qualified personnel in line with NFPA 72, local codes and the manufacturer's installation instructions. Please confirm that the 5601P is compatible with your fire alarm control panel, wiring, voltage, mounting and finish before ordering. Contact us with the models of your existing devices if you need help checking compatibility.
Need help with compatibility?
Looking for a manufacturer part number, compatible replacement, or quantity order? Contact Raztechs for sourcing and quote support.

System Sensor 135F, ready to order.
- Heat Detector Type: Combination (Fixed Temperature and Rate-of-Rise)
- Product Series: 5600
- Rate-of-Rise Threshold: 15°F (8.3°C) rise per minute
- Space Coverage: 50 Feet
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