household standalone combo smoke and co alarm

feature:

·Loud 85 decible alarm.

·Permanent carbon monoxide sensor.

·Powered by one 9V battery.&AC220V

·The alarm sound pattern is pulsed four short alarm beeps for CO alarm and continuous beeps for smoke alarm. The sound pattern is smoke pattern as CO and smoke occur simultaneously. The red LED will flash while in alarm mode.

·One "chirp" every 30 seconds is an indication that the battery is low(need replacement) or the unit is malfunctioning.

·Test button to test the units electronics and verifies proper unit operation.

·Green and red LED lights that indicate normal operation and alarm status.

·The unit will sound "chirp" and red LED flashes once as power up.

product pictures

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