Its certainly a good idea to have at least power power on-off, and record as a control as it provides this essental power managment. It sounds too clumbsy to turn the camera on then close up the housing and get then the dive gear on. (or the other way around ?) nither operation should be rushed. oring inspection should be not be rushed when closing the housing.
For an example small cheep lanc controller is the WACO DRM-1 small, power on power off, record , photo, zoom. Looks like its on one circuit board when you remove from the case, so it certinally would be small enough to fit inside the housing for the reed switch solution.
For an example small cheep lanc controller is the WACO DRM-1 small, power on power off, record , photo, zoom. Looks like its on one circuit board when you remove from the case, so it certinally would be small enough to fit inside the housing for the reed switch solution.