SW6500Description Radio rolling coded 1 channel KEYPAD With this radio key pad you can open your gate from a distance of 30m by digiting a 4 digit secret combination. You can keep your key pad with you. It will works by radio frequency. Easily install the key pad on internal or external wall. NO WIRE CONNECTION NEEDED ! With it's unique DUCATI's radio rolling code, give you peace of mind that your family and property is safe and secure. Features Safeguards