One button design for easy operation Alarm memory flashes red LED indicating which unit was the initiating alarm in interconnected system Test/reset button Battery backup provides protection in case of power failure Interconnectable with up to 24 devices
Test button—Tests unit's electronic circuitry, horn and battery functionLow battery indicator—Smoke alarm will chirp in the event of a low batteryRed LED—Flashes every 30-40 seconds to indicate that...