Kidde TRUSENSE COMBO User Manual page 17

To activate the battery carrier tamper resist feature, remove the unit from the mounting bracket, and locate
the small cut-out in the middle of the label on the back of the unit. With a small screwdriver, or similar tool,
slide the switch towards the "LOCK" position as shown on the label(see
Figure 9-F). The tamper resist feature is now active and the battery carrier
can not be opened until the tamper resist feature is deactivated.
NOTE: Before activating the battery carrier tamper resist feature, make
sure a fresh battery is installed in the unit and that the battery carrier is
properly closed. If the battery carrier tamper resist feature is activated
while the battery carrier is open, the battery carrier will not close and the
Figure 9- F
unit will be inoperable.
To deactivate the battery carrier tamper resist, in order to change the smoke alarm battery, remove the unit
from the mounting bracket (see Smoke Alarm Tamper Resist Feature if activated), and locate the small cut-out
in the middle of the back label. Using a screwdriver, or similar tool, slide the switch in the opposite direction of
the "LOCK" arrow as shown on the label. The battery carrier can now be opened and the battery changed.
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