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Chengdu Ebyte Electronic Technology Co.,Ltd. E34-DTU (2G4H20) user manual
Copyright ©2012–2019
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Chengdu Ebyte Electronic Technology Co,;Ltd 5
3.
Installation Specifications
3.1.
Structure
Pin
NO.
Name
Function
Description
1
DB-9 female socket
RS-232 interface
Standard RS-232 interface
2
3.81 terminal block
RS-485, power interface
Standard RS-485 interface and pressure line power interface
3
PWR-LED
Power LED
Red, lit when the power is on
4
TXD-LED
Transmit LED
Yellow, blinks when sending data
5
RXD-LED
Receive LED
Yellow, blinks when receiving data
6
DC power interface
Power interface
In-line round hole, outer diameter 5.5mm, diameter 2.5mm
7
DIP switch
DIP switch
Controlled by working mode
8
Antenna interface
SM A-K interface
external thread, 10mm, 50Ωcharacteristic impedance
Содержание 2G4H20
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