it is controlled by the control panel 1 as depicted in fig1 and fig2 and may either lock or unlock upon application of a current in the present embodiment when current is applied solenoid 4 retracts pulling latch 19 into a recessed state the locking system is preferably solenoid driven as depicted in fig9 however other electrically operated locking mechanisms may be used including but not limited to magnetic locks motor operated locks and electric strikes the locking mechanism optionally includes a manual key override 3 as depicted in fig9 a that allows the locking system to be unlocked in the event of emergency if the control panel circuitry or opening mechanism cannot function properly due to extended power outages or damage to any component lever 24 is operatively coupled to the manual key override inserting and turning a key in the manual key override 3 causes lever 24 to push against a protrusion 25 on the latch 19 forcing the latch 19 into a recessed state allowing access hatch 8 to be opened opening mechanism 5 is depicted in fig3 and in fig5 in the preferred embodiment the opening mechanism is driven by a linear thrust actuator 6 linear thrust actuator 6 is coupled to access hatch 8 at a pivot point 7 on angled access hatch mounting bracket 27 angled access hatch mounting bracket 27 is configured such that pivot point 7 is.