User's Manual

Replacing and

Installing Clock Backup Batteries

Note: 2 AA batteries are included with the unit. Install them before using the unit.

This model is equipped with a battery backup circuit that will maintain the time and alarm time

settings in the event of a temporary power interruption (the display is NOT lit). The battery

backup circuit will also operate the buzzer alarm to wake you up at the selected wake up time

even if the power is out. When the backup batteries are getting weak the Low Backup Battery

Indicator will begin ﬂashing in the display. When you see this ﬂashing indicator you should

replace the backup batteries as soon as possible. Note: We recommend alkaline batteries for

best performance.

To install/replace the backup batteries:

IMPORTANT: When replacing the backup batteries be sure to

have the unit connected to the AC outlet to maintain all of your

settings, otherwise it will be necessary to reset the time and

alarm time after the batteries are replaced.

1. Press tab to remove the battery door located on the back of

the unit. If replacing batteries, remove the exhausted batteries.

2. Insert 2 fresh AA batteries in the backup battery compartment.

Make sure the polarity of the batteries (“+” or “-” nodes)

matches the illustration.

3. Close the battery compartment door. Conﬁrm that the backup

battery indicator is not ﬂashing in the display.

Note: Make sure you dispose of batteries properly (see your local regulations)

Using the iWBT400

12/30/2016

Replacing Backup Batteries

DC 7.5V 2.3A