3, Installation method (installed with SV-1081D) @ According to the requirements of the Installation site, open a 36mm diameter holey (as shown In the figure below) In the space partition of the gate (usually the middle or front side). Em t Dr 50cm Single channel gate © Dual-channel gate Nita: Tha position of he poring should be based on the aus! gate typo and scans, and 25mm is for reference only. @ @ Unscrew the nut at the bottom of the gate head post, thread the cable aut of the nut, and remove the nut.