... 4, rolling code transmitter 5, cellphone remote control Sliding gate opener control board1, Inpout Voltage : AC230/110V selectable2, Motor ... Super heterodye AF modulation14, mobile phone remote control, cellphone remote control (optional, no distance limitation within GSM ... purposes21, Overheat and overload dual protection22, Self-lock electromechanical gear motor23, Time delay closed is adjustable24 ...