Specications
Table 4-26 UIM20A technical specications
Item Specications
Power input Supports the RS485 or PoE power supply.
COM/AIDI (RJ45) ● Supports eight RS485 or AI/DI signal inputs.
● Can connect to sensors such as the smoke sensor, water
sensor, door status sensor, and infrared sensor.
● Each port can supply power. Two RJ45 ports share one
12 V DC power supply that is controlled independently.
The maximum output current is 900 mA when the
voltage is 12 V. (COM1/AIDI_1 and COM2/AIDI_2 form a
group, COM3/AIDI_3 and COM4/AIDI_4 form a group,
COM5/AIDI_5 and COM6/AIDI_6 form a group, and
COM7/AIDI_7 and COM8/AIDI_8 form a group).
● The 12 V DC power supply can be switched on or
o
and is on by default.
POE Connects to the ECC800-Pro through the PoE port.
E-label 4.0 Supported
Communications Port
The following table describes the pin assignment for ports COM1/AIDI_1 to
COM8/AIDI_8.
Table 4-27 Pin assignment for ports COM1/AIDI_1 to COM8/AIDI_8
Item
Description
Pin
sequence
Pin1 RS485+
Pin2 RS485-
Pin3 12V
Pin4 RS485+
Pin5 RS485-
Pin6 D-
Pin7 D+
Pin8 GND
iMaster NetEco
Device Installation and Commissioning Guide (Data
Center) 4 Connecting Monitoring Cables to Devices
Issue 02 (2021-05-12) Copyright © Huawei Technologies Co., Ltd. 104
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