Potter CR-135MP THERMOFLEX CR-MP Series Indoor Outdoor Dual Action Heat Detector, 135°F, Weatherproof

Deliver reliable, weatherproof fire protection where standard detectors fail. The Potter CR-135MP Thermoflex heat detector is built for demanding indoor/outdoor applications—providing dependable dual-action detection (rate-of-rise plus fixed 135°F) and factory-sealed fly leads that resist moisture and corrosion. That combination reduces false trips while ensuring early detection of fast-developing fires and positive alarm at the releasing temperature. With a secure fusible-link mechanism that locks contacts in the alarm state and an operating range from -40°F to 250°F, the CR-135MP performs in cold garages, electrical rooms, carports, and other challenging environments. As an addressable-capable, ceiling-mount initiating device, it integrates seamlessly into fire alarm, security, surveillance, and building monitoring systems for centralized notification and recordkeeping. Specify the CR-135MP when you need rugged, low-voltage heat detection with easy installation onto standard exterior back boxes. Contact your sales representative or add to cart to protect critical spaces with proven Thermoflex performance.

• Weatherproof design with factory-sealed fly leads and corrosion-resistant mounting plate protects wiring in moist or corrosive environments
• Dual-action detection (rate-of-rise plus fixed 135°F) for faster, reliable alarm response in both rapid and sustained fires
• Secure fusible-link latch holds the alarm state for easy verification and compliance during inspections
• Wide operating range (-40°F to 250°F) enables use in unheated garages, chilled spaces, and exterior/exposed locations
• Addressable compatibility and standard ceiling-mount form factor simplify integration with fire alarm, security, and monitoring systems