CCTV camera to 20mm Terminal Box

[markdotjames 0]

Hi All, I am new to the CCTV installation techniques so i apologise if this is a basic dumb question.

 

I have some security cameras that look very much like this - http://www.screwfix.com/p/swann-pro-a850-clear-hd-bullet-security-cameras-pack-of-2/1313g

As you can see they have a 3 hole mounting box.

 

I have purchased some of these Terminal boxes to mount them on - http://www.screwfix.com/p/tower-terminal-1-way-terminal-box-20mm-black/69178

 

But:

The boxes have 2 proud mounting screws, the cameras have 3 recessed screw holes, my first thoughts are to use one of the mounting screws to hold the plate on, the other is used with the camera mount to hold in place them rotate into position and use 2 other screws to hold in place through plastic lid?

 

does that sound right?

 

Any and all advice is very much appreciated.

 

many thanks in advance

 

Mark