Potter CR-135W THERMOFLEX CR Series Conventional Heat Detector, Fixed/Rate of Rise, Indoor, 135 Degrees

Designed to deliver dependable early warning where it matters most, the Potter Electric Signal THERMOFLEX CR-135W conventional heat detector combines rate-of-rise and 135°F fixed-temperature detection for robust indoor fire monitoring. The CR Series’ dual-action technology triggers on a rapid 15°F-per-minute temperature rise while also activating at the fixed 135°F threshold, giving facilities faster detection without compromising stability in high-ambient settings. With a low-profile, white ceiling-mount form factor and wired connectivity, the CR-135W blends unobtrusively into commercial, retail, healthcare and warehouse environments and integrates smoothly with conventional fire alarm panels and security systems. Coverage extends up to 70 feet between detectors, helping reduce installation time and material costs. Available in single or multiple circuits with open or closed contact configurations, this model supports flexible system design and straightforward maintenance. Backed by Potter’s THERMOFLEX line and a 5-year limited warranty, it’s a reliable choice for building owners and security integrators seeking consistent performance for fire detection, monitoring and surveillance applications. Add the CR-135W to your next fire protection project or contact us to confirm system compatibility.

• Dual-action detection (rate-of-rise plus 135°F fixed temperature) for faster, more reliable fire response and reduced nuisance alarms
• Low-profile ceiling design that blends into commercial and institutional environments for discreet security and surveillance integration
• Supports up to 70' inter-detector spacing to lower device count and simplify installation for large-area monitoring
• Flexible conventional wiring with open/closed contact and single or multi-circuit options for easy integration with existing fire panels
• Industry-backed reliability with a 5-year limited warranty to reduce lifecycle risk and maintenance costs