Kidde Heat Detector, Hardwired with Battery Backup & 2 LEDs, Interconnect Capability, Ideal for Garages & Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup, Interconnectable, LED Warning L

Product 1: Heat detector alerts to temperatures rising above 135⁰ Fahrenheit & sounds an 85-decibel alarm to lend a hand offer protection to your circle of relatives
Product 1: Heat alarm operates on a 120V stressed power source with a 9-Volt alkaline battery backup
Product 1: Quick-connect power harness makes installation fast and easy
Product 1: An 85-decibel alarm sounds & a red LED indicates the smoke detector is sensing smoke or fire
Product 2: 24/7 Self-testing components are all the time checking the device to verify it is operating as expected (not an alternative to a manual push test)
Product 2: Easy installation mounting bracket included for quick installation in 4 orientations
Product 2: Photoelectric sensor detects visible fire particles associated with slow, smoldering fires, whilst the electrochemical sensor detects carbon monoxide
Product 2: 85-decibel alarm & LED warning indicators alert you to quite a lot of status: green = normal operation, amber = operating error, and red = smoke, fire or carbon monoxide event