User manual

4.1 Speaker
You can also operate the device independently of the mains power supply with the supplied
integrated VRLA rechargeable batteries.
Disconnect the device from the mains.
Remove the mounting screw of the battery compartment cover. Remove the two mounting
screws of the xing plate. Use only suitable VRLA rechargeable batteries of the same size and
type (see Ä Chapter 6.1 ‘Speaker’ on page 46).
The power supply cables are colour-coded and equipped with blade receptacles. To release
the connections, press slightly on the blade receptacle. When tting and wiring VRLA
rechargeable batteries, make sure the polarity is correct:
n red to + (battery 1)
n black to – (battery 2)
n blue connects + and – of the two rechargeable batteries
Then attach the rechargeable batteries with the xing plate in the battery compartment (two
screws) and replace the battery cover of the unit (one screw).
Battery operation
Installation and replacement of
VRLA rechargeable batteries
Installation
MBA120W MKII HTHT
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