First Alert HD6135FB Hardwire Heat Alarm With Battery Backup

★★★★★ 4.4 136 reviews
US$9.94
Price when purchased online
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US$9.94
Price when purchased online
Free shipping Free 30-day returns
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Product details

Management number 244234639 Release Date 2026/07/20 List Price US$9.94 Model Number 244234639
Category
  1. Tools & Home Improvement
  2. Electrical & Lighting

Highlights:

  • 120-volt AC/DC with 9-volt battery backup
  • 135 degrees Fahrenheit fixed rate and rate-of-rise temperature sensing
  • Microprocessor controlled for fewer nuisance alarms
  • The test/silence button both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality
  • Latching alarm indicator which automatically identifies which unit initiated the alarm
  • 120-volt AC inter-connectable (with maximum 18 compatible devices)
  • 85-decibel horn
  • Meets UL requirements

First Alert HD6135FB Hardwire Heat Alarm With Battery Backup

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4.4 out of 5
★★★★★
136 ratings | 56 reviews
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