Details

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Suitable For Door Access System, Automatic Gate, Alarm System & etc
4 Channel button
Frequency 433mhz
Dip Switch Adjustable
Button A: Left side of gate (Motor A)
Button B: Both sides of gate
Button C: Right side of gate (Motor B)
Button D: Pillar light / Siren

Only 1 step to setup! DIY 433Mhz 8 Digits Number 
Open the old Remote Controller casing, you will see a 8 digits number adjuster, then open the new Remote Controller casing, adjust the 8 digits number follow your old Remote Controller's adjuster.