Akuvox R20 Series - 2.5.1. Email Notification

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1.4. Connector Introduction
Connector
Ethernet(POE)
Ethernet(POE) connector which can provide both power
and network connection.
12V/GND External power supply terminal if POE is not available.
RS485A/B
RS485 terminal for automation system control(e.g.
Elevator control).
DOORA/B
Trigger signal input terminal(e.g. Press indoor button to
open relay).
RelayA/B NO/NC Relay control terminal.
Notes：12V/1A DC from LPS（power line≤3m） or 48V/0.2A POE