Ebyte E90-DTU User Manual page 7

Chengdu Ebyte Electronic Technology Co,;Ltd
Pin NO.
1 DB-9 female socket
2 3.81 terminal block
3
4
5
6 DC power interface
7
8
Chengdu Ebyte Electronic Technology Co,;Ltd
Copyright ©2012–2019，
Name
PWR-LED
TXD-LED
RXD-LED
DIP switch
Antenna interface
Function
RS-232 interface
RS-485, power interface
Power LED
Transmit LED
Receive LED
Power interface
DIP switch
SM A-K interface
E90-DTU (433C37) user manual
Description
Standard RS-232 interface
Standard RS-485 interface and pressure line
power interface
Red, lit when the power is on
Yellow, blinks when sending data
Yellow, blinks when receiving data
In-line round hole, outer diameter 5.5mm,
diameter 2.5mm
Controlled by working mode
external thread, 10mm, 50Ωcharacteristic
impedance
6