Release Key for Sliding Gate Opener DKL400UY,DKC400UY, L110C, L200Y The inverse operation restores the gate automation. In case of the system failure or power cut-off, the gate can be manually opened by the key Insert the triangular key inside the triangular plug located on the bottom of actuator body, and then turn counter-clockwise till the stop. Motors shall be unlocked. In case of the system failure or power cut-off, the gate can be manually opened. Insert the triangular key inside the triangular plug located on the bottom of actuator body, and then turn counter-clockwise till the stop. Motors shall be unlocked. The inverse operation restores the gate automation.