... 4, rolling code transmitter 5, cellphone remote control Sliding gate opener control board1, Inpout Voltage : AC230/110V selectable2, ... ,Super heterodye AF modulation14, mobile phone remote control, cellphone remote control (optional, no distance limitation within GSM Network ... , Gear-drive or chain-drive is optional26, Gear case made of aluminum alloy27, Pedestrian mode28, Easy installation29, ...