Transmitting remote control signal, function - GF80.20-P-4010S

MODEL 215, 220 

When a button is pressed the remote control key first sends a radio frequency  (RF) signal and then an infrared (IR)  signal. The signal contains a code for checking the access authorization and a command for executing a function.

The radio frequency remote control has a greater transmission range  . For IR transmission it is necessary to point the remote control key at one of the door handles.