Thermotech 302-AW-135 all-weather fixed-temperature heat detector rated at 135°F for outdoor and unheated-space fire detection.

Compliance

• UL Listed
• FM Approved
• NFPA 72
• MEA Accepted

Key features

• 135°F (57°C) fixed-temperature set point — standard threshold for commercial fire detection in protected outdoor areas
• All-weather construction tolerates outdoor exposure, condensation, rain, and seasonal temperature variation
• Rate-compensated mechanical design reduces thermal lag, delivering accurate response to rapid fire-generated heat
• FM Approved for property protection applications in industrial facilities governed by FM Global data sheets
• MEA Acceptance for New York City projects requiring local code compliance

Thermotech 302-AW-135 detectors are mechanical, fixed-temperature heat initiating devices for outdoor and unheated-indoor environments where electronic smoke detectors cannot operate reliably due to ambient conditions. The 135°F set point is the standard lower threshold for commercial fixed-temperature heat detectors per NFPA 72. Applications include loading docks, unheated warehouses, exterior canopies, and covered parking areas where ambient temperatures consistently remain well below 135°F. For areas subject to elevated ambient temperatures, use the 302-AW-194 to avoid nuisance actuation. The mechanical element operates without electrical power until actuation, producing a contact closure on the connected initiating device circuit.

Verify panel/device family compatibility before ordering.