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1, free-standing roof installation, simple installation, no deb ing;

2, built-in dedicated IC, stable performance, high sensitivity;

3, on the principle of optical smoke measure, can accurately detect the early fire smoke;

4, to simulate alarm alarm test;

5, comes with a buzzer, but independent alarm;

6 and 9 v battery power supply, monitor state current less than 10 ua, the alarm current is less than 12 ma;

7, low voltage alarm, when the battery voltage is lower than 6.8 V, a voice to remind the user to change batteries;

8, alarm, loudness, volume is greater than or equal to 85 db;

9, environmental conditions: temperature - 10 ℃ ~ + 60 ℃, relative humidity less than or equal to 95% RH (40 plus or minus 2 ℃);

10, protection area: alarm installation height 6 meters, protection area of 60 square meters.