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MBU 400 Installation Guide 17
4. Place the handset in the charger, and charge the battery. We
recommend that you charge the battery fully before rst use. This
takes approximately 10 hours. When you place the handset in the
charger, the handset automatically registers with the MBU, provided
you have just reset the MBU. Place the handset near the MBU during
the registration process.
Note: After registration of the first handset,
there is a 5-minute period during which
you can register any additional hand-
sets. If you want to register additional
handsets after the 5-minute period has
expired, press the Reset button once
(do not hold down) on the rear of the
MBU to start a new 5-minute registration
period.
Installing the MBU 400