Chengdu Ebyte Electronic Technology Co.,Ltd.
User Manual
Copyright ©2012–2020
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Chengdu Ebyte Electronic Technology Co.,Ltd.
9
Figure 1-4 Display of the product interface on the receiving (output) end
Table 1-4 Definition of pin function of receiving (output) end product
No.
Port and Other
Definitions
Function
Description
1
PE
Protective earth
terminal
Lightning protection grounding. If the ground lead is good, it is
recommended to connect the product case to the ground; vice versa.
2
+
Positive power
supply
The power input is positive, and the DC input voltage range is 8-28V.
3
-
Power ground
Power input negative (0V).
4
B/RX
Communication
interface B/RXD
RS485 interface B/(RS232_RXD).
5
A/TX
Communication
interface A/TXD
RS485 interface A/(RS232_TXD).
6
G
Communication
port
RS485 ground (can not be connected)/RS232 signal ground (0V).
7
Second
communication
interface
Antenna
port/network port
433Mhz antenna port/network port socket
8
NO1
Switch output
channel 1
The relay is normally open contact output, and the contact current is
less than or equal to 3A.
9
COM1
Public 1
Common terminal of relay output channel 1.
10
NO2
Switch output
channel 2
The relay is normally open contact output, and the contact current is
less than or equal to 3A.
11
COM2
Public 2
Common terminal of relay output channel 2.
12
NO3
Switch output
channel 3
The relay is normally open contact output, and the contact current is
less than or equal to 3A.
13
COM3
Public 3
Common terminal of relay output channel 3.
