Chengdu Ebyte Electronic Technology Co,;Ltd
E90-DTU (230SL22-GPRS) User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co,;Ltd
6
No.
Name.
Function
1
Grounding screw
Ground connection
2
DC_IN
Power adapter interface, power supply range 8~28V, recommended 12V/24V
3
DC_IN-
Power reference ground
4
DC_IN+
Power input, power supply range 8~28V, recommended 12V/24V
5
Reset
System reset button, long press time no requirement
6
USB
Micro USB
：
parameter configuration interface
7
Reload
Press 4~10s to restore the factory Settings
8
PWR
Red: power indicator
9
WORK
Yellow: data transmission indicator light; The light flashes when there is data
transmission
10
LINK
Yellow: network indication, always on after net
11
NET
4 G/GPRS antenna interface (SMA - K external thread hole, 50 Ω characteristic
impedance)
12
SIM
SIM card slot
13
RF
RF antenna interface (SMA - K external thread hole, 50 Ω characteristic impedance)
Note: it is recommended to connect the housing with the earth through grounding screws.
Summary of Contents for E90-DTU 230SL22-GPRS
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