GeoVision GV-AS2120 IP Control Panel - Manual (Page 15)

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GV-WTR
GV-WTR is a converter designed for converting Wiegand
interface to RS-485 interface, and vice versa. It enables 3rd
party readers to be connected to RS-485 GV-Controllers, as well
as allowing GV-AI FR (software) and GV-RS1320 (RS-485
camera reader) to be connected to 3rd-party Wiegand
controllers.
GV-IB25 / 65 / 85
Infrared Button
GV-IB25 / 65 / 85 Infrared Button detects infrared movement
within 3 to 12 cm and allows you to open the door with a wave of
hand.
Push Button Switch
The push button switch can be integrated with access control
system, allowing door exit by momentarily activating or
deactivating the electric locking device. Both American standard
and European standard push buttons are available.
Electric Lock
Three types of electric locks are available: electromagnetic lock,
electric bolt and electric strike.
Power Adapter
Contact your sales representative for the countries and areas
supported.