SEA Libra Mini Tank Single Kit 1 Operator 1 control board GATE 2 1 Photocell 2 Remote controls 433 Mhz 2 Warning signs 1 external receiver Strong & Silent - The SEA Libra Mini Tank has been planned in accordance with standards of silence, reliability, and anti-crush safety granted by setting a valve for the max thrust regulation of the system. New positive stops are available for a perfect alignment of the leaves in closing. Gates can be securely locked in the closed position using the operators internal hydraulic system. Manual Release: The operator’s internal hydraulic locking can be released using a special key, in case of power failure.