Product Type | Fixed Rate-of-Rise Mechanical Heat Detector |
Detection Mechanism | Thermomechanical, Rate-of-Rise and Fixed Temperature |
Fixed Temperature Threshold | 194°F (90°C) |
Sensor Type | Passive |
Power Requirements | None (Non-powered device) |
Form Factor | Ceiling mounted, single-gang box compatible |
Compatibility | Works with standard building and fire alarm systems |
Alarm Type | Normally open contacts close on alarm |
Application Environment | Commercial and industrial buildings |
BOSCH 5602 Fixed ROR Mechanical Heat Detector



Key Benefits

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- Dual sensing mechanism (fixed and rate-of-rise) increases detection reliability across fire types.
- TAA compliance makes it suitable for U.S. federal procurement and secure environments.
- No power supply requirement simplifies installation and enhances long-term durability.
Product Overview
The BOSCH 5602 Fixed Rate-of-Rise Mechanical Heat Detector is a precision-engineered component designed to enhance building safety systems. It employs a mechanical rate-of-rise sensing mechanism, responding to rapid temperature increases or reaching a fixed threshold of 194°F. This dual-trigger design ensures reliable detection of both fast and slow-developing fires, making it suitable for a variety of commercial and industrial environments.
Engineered in the United States and compliant with Trade Agreements Act (TAA) standards, this detector meets the rigorous requirements of government and institutional projects. As a passive sensor, it does not require separate power supply wiring, simplifying installation and reducing long-term maintenance costs. Ideal for use where smoke detectors are impractical, such as in high-dust or high-moisture environments, it integrates seamlessly with broader alarm and building management systems.
The combination of rate-of-rise and fixed temperature detection in a mechanical form factor ensures operational reliability without the susceptibility to electronic interference, making it a trusted choice for mission-critical safety infrastructure.
Specifications
Product Overview
Wireless Features
Wireless Capability | None (Wired connection only) |
Compliance & Origin
Country of Origin | United States |
TAA Compliance | Yes |
UL Listed | Yes, UL 521 |
FM Approved | Yes |
CSFM Approved | Yes (California State Fire Marshal) |
MEA Approved | Yes (New York City) |
RoHS Compliance | Yes |
Environmental Directive Compliance | Compliant with applicable EU directives |
Advanced Security Features
Tamper Detection | Mechanical construction deters tampering |
Signal Reliability | Immune to electronic interference |
False Alarm Resistance | Low false alarm rate due to mechanical design |
Interfaces
Electrical Connection | Two-wire dry contact output |
Mounting Base Type | Single-gang, 3.5-inch octagonal or 4-inch square junction box |
Terminal Type | Screw terminal connectors |
Physical & Environmental
Dimensions (Diameter x Height) | 5.6 in x 2.0 in (14.2 cm x 5.1 cm) |
Weight | 6 oz (170 g) |
Operating Temperature Range | 32°F to 150°F (0°C to 66°C) |
Storage Temperature Range | -4°F to 155°F (-20°C to 68°C) |
Operating Humidity | 0% to 95% RH, non-condensing |
Color | White |
Material | Plastic housing with metal internal components |
Installation Location | Indoor use only |
Cloud Management & Licensing
Cloud Management | Not applicable |
Licensing Requirements | None |
Management Interface | Not applicable (passive device) |