AC/DC Operated Interconnectable Fixed Temperature Heat Alarm
►Operated with 220－240V AC 50Hz mains and backup with single 9VDC block battery
►The heat alarm is sensitive only to a fixed temperature （58℃）for less nuisance alarms due to   contamination, dust, and insects
►With quick fix mounting bracket and simple AC connector for easy installation.
►Fitting and battery tamper resist feature
►Alarm and AC power supply indicator
►Extra loud alarm sound over 85dB
►Interconnectable up to 40 Heat And/Or Smoke Alarms
►Low-battery and battery missing warning sound
►Self-test button
►Auto hush when temperature is below alarm point.
►CE, FCC approved，comply with EN54, EN50130-4, UL521 standard