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Kidde Heat Alarm: Responds to Temperature Rather Than Smoke


The Kidde HD135F 120VAC Wire In Heat Alarm responds to temperature rather than smoke.


  • Gives early warning to dangerous temperatures of 135°F or more

  • Includes a tamper resist pin that helps to deter thief and tampering

  • Can be used as a single station unit or can be interconnected to up to 24 Kidde devices in a multiple station arrangement


The interconnect system must not exceed the NFPA (National Fire Protection Association) limit of 18 initiating devices (Smoke, heat, CO, etc) interconnected, it is still possible to interconnect 6 strobe lights and or relay modules. This unit includes a 5-year limited warranty and is UL listed.


Key Features:
  • Interconnectable- interconnect with up to 24 Kidde devices of which 18 can be initiating

  • 9V Battery Back Up- Provides continuous protection even during power outages

  • Low Battery Indicator- Alerts user in the event of a low or missing battery

  • Quick Connect Power Harness- Makes installation fast and easy



Flashing Red LED

Flashes every 30-40 seconds to indicate proper operation


Test Button

Tests unit's electronic circuity, horn, and battery function



Technical Specifications

Power Source: 120VAC, 60HZ, 9V battery backup

Audio Alarm: 85dB at 10ft

Temperature Range: -20°F to + 100°F (-29°C and + 38°C)

Humidity Range: 5%-95% relative humidity (RH)

Size: 5" diameter x 2" depth

Weight: .75lbs

LED: Green, AC power present, alarm mode; flashing Red indicates originating unit


Power-Flo Technologies is proud to partner with Kidde who provides smoke alarms that save lives, prevent injuries, and minimize property damage by alerting residents early to a fire hazard. The Kidde HD135F 120VAC Wire In Heat Alarm is a highly reliable safety device that offers crucial protection by responding to dangerous temperature levels rather than smoke. With features like interconnectivity with other Kidde devices, a tamper-resistant design, and a 9V battery backup, this alarm ensures continuous and comprehensive safety coverage. Backed by a 5-year limited warranty and UL listing, the Kidde HD135F delivers peace of mind by helping to safeguard lives and property against the threat of fire.

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