With all of the automation kits you will receive 1 x pair of photocells, which are to be installed directly in front of the gate/s on the outside, offering safety on entry.
SEMI-AUTOMATIC setting (1 command to open & then a separate command to close) you only need 1 pair of Photocells.
FULLY-AUTOCLOSE setting (1 command to open & then following an adjustable time delay your gate/s would close). If choosing this option you need an extra pair of Photocells for safety on exit.
