Simons Voss Technologies SmartRelay 3 Reader Quick Manual page 30

4. Connections
Reader connection
-
WP version
The weatherproof WP version of the reader is supplied with a 2 m long,
pre-assembled cable.
Reader connection
A
B
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SREL3 controller connec-
tion
- (optional)
Wire colour in cable
yellow
brown
Signal
GND. Connection for ex-
ternal power supply. Elec-
trically connected to reader
port 3. Only required with
external power supply.
SREL3 controller
connection
A1/A2/A3
B1/B2/B3
SmartRelais 3 Leser
Signal
RS-485: Data line A
RS-485: Data line B
EN