Kidde Heat Detector, Hardwired with Battery Backup & 2 LEDs, Interconnectable & Smoke Detector, Hardwired Smoke Alarm with Battery Backup & Interconnect Capability

• Product 1: Heat detector alerts to temperatures rising above 135⁰ Fahrenheit & sounds an 85-decibel alarm to help protect your family Product 1: Protects during a power failure - heat alarm operates on a 120V wired power source with 9V battery backup Product 1: Quick-connect power harness makes installation fast and easy Product 1: Test Button lets you check that the heat sensor’s electronic circuitry, horn, and battery are working Product 2: Ionization sensing technology — detects invisible fire particles associated with flaming fires quickly and sounds an 85dB alarm Product 2: Hardwired smoke detector with battery backup — provides reliable detection, even during a power outage Product 2: Large base makes mounting easy, while a front battery pull tab lets you activate the smoke alarm without removing it from the mounting bracket Product 2: Whole-home interconnection — maximum of 24 Kidde devices of this type can be interconnected. when one alarm sounds, they all do