A modular installation system for the installation of camera provides an installation kit capable of being used either flush mounted or protruding on the wall of an aircraft cabin. An external mounting housing or a mounting frame may be used. A camera module includes a camera and mounting hardware including a latching mechanism. The camera module may be arranged substantially in front of the installation wall or substantially flush with the installation wall using the same latching mechanism of the camera module. An external housing may be used for housing the camera module such that the external housing mounts on a surface of a wall or partially inserted into a wall, and the external housing provides latching hardware for mating with the latching mechanism of the camera module. A mounting frame may be inserted in a wall cutout to provide latching hardware for mating with the latching mechanism of the camera module for substantially flush mounting. An external frame may be removably fitted onto the camera module.