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Revision number: 1.01
APPOINTMENT
VRD-485 RFID reader with RS-485 interface is intended for reading RFID contactless identifiers (cards, tags,
others) and sending it over RS-485 interface. VRD-485 reader provides reading of the identifier from
distance from 10 to 90 mm (depending on the conditions). At voltage +12 V standard distance for reading
EM-Marine identifier at bringing the RFID tag in parallel to case of the reader is 70...90 mm. Distance for
reading is lowering at mounting of the reader on the metal surface and close to sources of electromagnetic
interferences.
TECHNICAL SPECIFICATIONS
PARAMETER
Type of contactless identifiers read
Power supply voltage
Average consumed current
Peak consumed current
Communication interface
Communication protocol
Maximal possible length of communication
cable
Dimensions
Weight
Operation temperature range
Distance of the reader to the control system up to 1200 m is possible only when using the galvanic isolation
of the RS-485 port. The option of using the reader without galvanic isolation is also possible, but it leads to
decrease in the communication range to 50 ... 200 m depending on the presence and strength of
electromagnetic interferences.
www.technotrade.ua
VRD-485 RFID READER WITH RS-485 INTERFACE
VALUE
EM-Marine (optionally Mifare + EM-Marine)
8...14 V DC
40 mA
80 mA
RS-485
Modbus
1200 m
95 x 68 x 20 mm
100 g
-20...+85 deg. C
Review date: 1 December, 2021
page 5 from 13
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