Bought this to allow me to switch the lines to a 12v socket and my portable fridge/freezer on and off when there's nothing connected. Easy to fit into the standard CBE frame and connect up & looks great. One slight niggle - no wiring diagram is included, so I assumed both connectors on the input side were linked. When I tested the switches neither worked until I realised you have to have a separate live feed for each of the two inputs and then you must connect the output to the appropriate side for the input. This means you have to have TWO live feeds, one for each switch and you can't just use a jumper lead from the spare input lead to the second switch. Luckily my live supply had a piggy back spade anyway which solved the issue but I did have to take it all to pieces to sort this, now working perfectly.
Finally, shame CBE don't market a double switch with a selection of stickers so you can label the switches to suit the devices you want to control - in my case a 12v socket and a fridge (not a light and water pump as supplied)