PIN access is an alternative to a handheld remote for gate automation: visitors or trades enter a code instead of carrying another transmitter. The keypad still has to speak the same coding family as the receiver, at the listed frequency where that is specified.
On the current BFT Q.BO Touch, the listing supports up to 100 rolling-code PINs across 10 channels at 433.92 MHz. Those figures belong to this model. If other keypads are added to the collection later, check each product page rather than assuming the same PIN count, channel count or frequency.
Safety sensing at the opening is separate from keypad access. See photocells and safety beams if you need beams for the automated gate.