GV-WTR is a converter designed to support Wiegand interface to RS-485 interface, thereby enabling 3rd party readers to be connected to RS-485 GV-Controllers. Through the GV-WTR, Wiegand-interface readers can be easily combined to access control systems for improved versatility. Support one Wiegand (3rd party) reader to be integrated to a RS-485 GV-Controller. Compliant with GV-AS210 / 410 / 810 / 1010 / 1520 / 2110 / 2120 / 4110 / 4111 / 8110 / 8111, GV-CS1320 and GV-EV48.