If suddenly, your monitor or call station no longer seems to be powered. The cables on the rear might be disconnected. You should then:

• Check that the cables are properly inserted in the terminals up to the stops.
• Check that cable diameter is between 0.5 mm² and 1.5 mm².
• Check that the ends are stripped over a length of 10 mm

If, despite these checks, the cables still come loose, then use 0.75 mm² rigid cables. To do this, connect the existing cables to a domino, then connect the more rigid cables, with ends stripped to 10 mm, to the rear of the indoor monitor.