Working as a standalone solution, GV-AS100 is a card reader and also a single door controller. It is possible to add one more card reader to GV-AS100 for entry and exit applications. GV-AS100 has the capability to store up to one thousand cards. When GV-AS100 is being used as a standalone unit the programming is either done on the keypad or from the software GV-ASManager through the RS-485 connection.