An optically intelligent image sensing device is provided. The base has an upper part in the form of a plug insertable into the container and a lower part having an annular outer part on which the upper part can rotate, and includes locking mechanism projections selectively locked into slots in the upper part by rotation. When the ground-level loading trailer is to be lowered, a single individual can simply remove the travel pin from the scissor hitch assembly and allow a portion of the scissor hitch assembly to slowly lower through the assistance of gas springs. The housing also comprises releasable means for connecting same to a working line with tubing that is intended to move the housing in the conduit.