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  • Kidde | 302 Series Rate Compensation All-Weather Heat Detector, 194F Fixed Temperature, FM & UL Listed | 302-AW-194
302 Series Rate Compensation All-Weather Heat Detector, 194F Fixed Temperature, FM & UL Listed
Kidde Commercial

302 Series Rate Compensation All-Weather Heat Detector, 194F Fixed Temperature, FM & UL Listed

SKU KD-302-AW-194

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The Kidde 302-AW-194 is an all-weather rate compensation heat detector rated at 194F (90C), built for environments where standard detectors won't survive - outdoor covered areas, parking garages, cold storage, and anywhere moisture, condensation, or corrosive atmospheres are a factor. Hermetically sealed and tamperproof, it mounts vertically and self-restores after activation with no manual reset needed.

Built for the commercial fire installer

Rate compensation technology offsets the thermal lag that plagues conventional fixed-temperature detectors, giving you faster response on rapid fires without false alarms from gradual temperature changes. The 302-AW handles minimum ambient temperatures down to -40F and maximum ceiling temperatures up to 150F. FM Approved and UL Listed (UL 521), it fits directly into conventional fire alarm panel circuits with two-wire normally-open contacts.

Key features

  • Rate compensation detection: offsets thermal lag for faster response to real fires while rejecting slow temperature swings
  • All-weather construction: hermetically sealed, corrosion resistant, rated for environments with moisture, condensation, and explosive atmospheres
  • Self-restoring operation: resets automatically when temperature drops below the rated threshold - no manual reset, no truck roll
  • Wide ambient range: operates from -40F to 150F ceiling temperature, covering cold storage to industrial environments
  • FM Approved and UL Listed: meets code requirements for commercial fire alarm installations
  • Simple two-wire connection: normally-open contacts wire directly to any conventional FACP initiating circuit

System requirements

Connects to any conventional fire alarm control panel via two-wire normally-open initiating circuit. Rated for 6-125 VAC (5A), 6-25 VDC (1A), or 125 VDC (0.5A). Refer to NFPA 72 for detector spacing and placement requirements.

Specifications

SKUKD-302-AW-194
BrandKidde Commercial
Form factorAll-weather rate compensation heat detector, vertical mount
Detection methodRate compensation with differential air chamber
Rated temperature194°F (90°C)
Contact typeNormally open, fine silver contacts
Electrical rating (VAC)6-125 VAC, 5A
Electrical rating (VDC)6-25 VDC / 1A, 125 VDC / 0.5A
Operating temp-40°F to 150°F (-40°C to 66°C) ambient/ceiling
Construction0.040 anodized aluminum sensing shell, hermetically sealed, tamperproof
UL spacing (vertical)50' x 50' (15.2 x 15.2 m)
UL spacing (horizontal)40' x 40' (12.2 x 12.2 m)
FM spacing30' x 30' (9.1 x 9.1 m)
ComplianceFM Approved, UL Listed, MEA

Documents and resources

FAQs

What is rate compensation and why does it matter?
Rate compensation offsets thermal lag in fixed-temperature detectors. On fast fires, the 302 responds sooner via differential shell expansion. On slow fires, it trips at the precise rated temperature. Faster response, fewer false alarms.
Can this detector be used outdoors?
Yes. The 302-AW is hermetically sealed and corrosion resistant, rated for weather, moisture, condensation, and explosive atmospheres. No special backbox needed. Minimum ambient: -40°F (-40°C).
Does it require manual reset after activation?
No. The 302 Series is self-restoring. When surrounding air temperature drops below the rated level, the sensing shell contracts and the contacts open automatically, resetting the detector without a site visit.
What fire alarm panels does this work with?
Any conventional FACP with a normally-open initiating circuit. Two-wire, normally-open contact rated for 6-125 VAC (5A), 6-25 VDC (1A), or 125 VDC (0.5A). No special modules or addressable protocols required.
What spacing should I use for the 302-AW?
UL: 50' x 50' vertical, 40' x 40' horizontal. FM: 30' x 30' either orientation. Based on smooth ceilings up to 10' (3m). Refer to NFPA 72 for non-smooth or higher ceilings.
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