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14
AI4
15
GND
16
17
SFR
18
SIM
(2) Receive (restore) end product interface description.
Port and
serial
Other
number
Definitions
1
PE
2
+
3
-
4
B/RX
5
A/TX
6
G
second
7
communicati
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Analog input 4
channels
input negative
without
reset
SIM card slot
Figure 1-4 Display of the product interface on the receiving (restore) end
Table 1-4 Definition of pin function of receiving (recovery) end product
Function
protective earth
terminal
Positive power
supply
power ground
Communication
interface B/RXD
Communication
interface A/TXD
communication
port
Antenna
port/network port
0/4～20mA analog signal input channel 4.
Input negative (0V).
Leave it in the air, do not connect.
Press and hold for 3 seconds to restore the factory settings (Set
Factory Reset) (indicated by the status of the RUN light).
Insert a data IoT card or a phone card with a sufficient data plan.
Lightning protection grounding. If the ground lead is good, it is
recommended to connect the product casing to the ground; otherwise,
it is OK.
The power input is positive, and the DC input voltage range is 8-28V.
Power input negative (0V).
485 interface B/(RS232_RXD).
485 interface A/(RS232_TXD).
485 ground (can not be connected) / RS232 signal ground (0V).
433Mhz antenna port/network port socket
K62-DL20 User Manual
illustrate
11
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