VTech VS150 TWIN User Manual page 29

Plug the telephone line cord (or DSL ilter) into the wall jack.
3.
Align the holes on the back of the telephone base with the
standard wall plate. Slide the bracket down until it clicks
securely in place. Connect the power adapter to the telephone
base and an electrical outlet not controlled by a wall switch.
4. Slide the telephone base down until it clicks securely in place.
Bundle the telephone line cord and power adapter cord neatly
with twist ties if necessary.
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