Operating Instructions

LED Indicator Operation

Red LED

Red LED will flash in conjunction with the alarm beep. Therefore, the red LED will flash during a smoke alarm, a CO alarm, a low battery mode chirp and a unit error mode chirp.

Green LED

The green LED will flash as described below under the following conditions:

–Standby Condition (powered by AC and battery backup): The LED will be constantly on, but will flicker every 30 seconds when a CO reading is taken.

–Standby Condition (for model KN-COSM-IB only – powered by only battery backup):

The LED will flash every 5 seconds.

–Alarm Memory Condition: The LED will flash every second signifying that the alarm sensed a smoke or CO hazard. It will continue to flash every second until the test/reset button is pressed, thus resetting the alarm.

–HUSH MODE Condition: The LED will flash every 2 seconds while the alarm is in HUSH mode.

Tamper Resist Feature

To make your smoke/CO alarm tamper resistant, a tamper resist feature has been provided. Activate the tamper resist feature by breaking off the four posts in the square holes in the trim ring (see figure 5A). When the posts are broken off, the tamper resist tab on the base is allowed to engage the mounting brack- et. Rotate the alarm onto the mounting bracket until you hear the tamper resist tab snap into place, locking the alarm on the mounting bracket. Using the tamper resist feature will help deter children and others from removing the alarm from brack- et. NOTE: To remove the alarm when the tamper resist tab is engaged, press down on the tamper resist tab, and rotate the alarm off of the bracket (see figure 5B).

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