Becker Traffic Pro 4720 Operating Manual page 69

For removal, the unit must first be unlocked. For this purpose, push in both slides to the second detent position, as shown in Figure
A. Subsequently, withdraw the unit with both slides. (Figure C). Then remove the slides by pressing the springs on the right and
left sides of the unit.
If the unit has been installed in another vehicle, the unit's springs may have to be adjusted before installation. To adjust the springs,
push in the slides as shown in Figure D and then adjust as shown in Figure E (press the slide lightly in direction 1 and simultane-
ously move the slide in direction 2).
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