Maintenance
FTB-2/FTB-2 Pro and FTB-4 Pro 305
Replacing Batteries
To replace the batteries in the unit:
1. Open the battery compartment as follows:
1a. Position the unit so that its front panel rests on a flat surface such
as a table.
1b. Lift the unit’s support to have a complete access to the battery
compartment.
1c. Lift the mobile part of the battery compartment screws and turn
the screws counterclockwise until the compartment door is
loose. Since they are captive screws, you cannot remove them
completely.
1d. Remove the battery compartment door.
Turn screws
counterclockwise
Battery compartment
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