System Sensor 194F Fixed Temp/Rate-of-Rise 5602, Single-Circuit Mechanical Heat Detector
Heat, not smoke, sets it off.
A wired 194F fixed-temperature and rate-of-rise heat detector for places where smoke detectors are unsuitable, such as kitchens, garages and boiler rooms.

Some rooms are too harsh for smoke detectors.
Kitchens, garages and boiler rooms can be unsuitable for smoke detection. A heat detector responds to temperature instead, so these spaces can still be covered by the fire alarm system.
Built for straightforward installs
The 5600 series pairs two ways of sensing heat with practical mounting and wiring details.
Fixed temp plus rate-of-rise
It combines a fixed-temperature rating with a self-restoring rate-of-rise sensor, with a threshold of 15°F (8.3°C) rise per minute.

Space cover
Listed as the space cover for this detector.
Easy terminal screws
Terminal screws make wiring the single-circuit detector easy.
Many back box options
Mounts to single gang, 3.5 and 4Octagonal, or 4square with square to round plaster ring, and the bracket is reversible.
Clear exterior markings
The 5600 series is marked on the outside of the unit so you can confirm the proper detector is being used.
Everything you need to know.
| Brand | System Sensor |
| Model | 194F |
| Heat Detector Type | Fixed Temperature, Rate of Rise |
| Rate-of-Rise Threshold | 15°F (8.3°C) rise per minute |
| Space Cover | 50 Feet |
| Maximum Installation Temperature | 150°F |
| Connectivity | Wired |
| Input Voltage | 120V AC, 230V AC, 28V DC |
| Color | White |
| Form Factor | Box Mount |
| Height | 1.7" |
| Weight (Approximate) | 6 oz |
System Sensor 194F Fixed Temp/Rate-of-Rise 5602, Single-Circuit Mechanical Heat Detector
The System Sensor 5602 is a heat detection product: 194F Fixed Temp/Rate-of-Rise (Single-Circuit Mechanical Heat Detector). 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
- Plain housing for residential installations (Model 5601P)
- Easy-to-use terminal screws
- A broad range of back box mounting options: Single gang, 3.5 and 4Octagonal, 4square with square to round plaster ring
- Reversible mounting bracket
- Multiple configurations for installations: Single- and dual-circuit models, Fixed temp and combination fixed- temp/rate-of-rise 135°F or 194°F ratings.
- The 5600 series provides clear markings on the exterior of the unit to ensure that the proper detector is being used.
Specifications
- Brand: System Sensor
- Model: 5602
- Product Model: 5602
- 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 minuteMaximum Installation Temperature 150°F
- Shipping weight: 0.47 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 5602 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 194F, ready to order.
- Heat Detector Type: Fixed Temperature, Rate of Rise
- Rate-of-Rise Threshold: 15°F (8.3°C) rise per minute
- Space Cover: 50 Feet
- Maximum Installation Temperature: 150°F
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