A marine grade digital gatelock with many unique features: DEADLOCKING - punch in the code, turn the handle and the stainless steel latch bolt moves forward and deadlocks AUTO-LATCHING - close the gate and the latch bolt latches into the gate frame. To open the gate - enter the code and turn the handle NO POWER NEEDED - high quality digital keypads ensure long lasting durability Single Sided Digilocks are available for left hand or right hand hanging gates. Please be sure that you have selected the correct lock to suit your gate (hanging is judged when looking from the outside of the gate)