KIDDE HD135F Heat Detector with Battery Backup LOT OF 4

The Kidde HD135F hardwired heat detector with battery backup offers owners an optimal way to protect their homes against deadly heat levels. This device measures heat temperatures and alerts you of heat exceeding 135 degrees Fahrenheit within your home. The ability to interconnect with up to 24 other devices gives the Kidde KD135F the ability to offer great protection, ensuring total defense against dangerous heat levels.

• • Interconnects with up to 24 Kidde devices
• • 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
• • Red LED Flashes every 30-40 seconds to indicate proper operation
• • Temperature Range: 40°F to 100°F (4°C to 38°C)