1 Power jack
NOTE
Use a DC power cable to connect the router
to an external power source.
2 RS232 interface
NOTE
The RS232 interface can be used as a console
interface to configure the router.
3 WAN interface: GE electrical interface 4 Two SIM card slots
NOTE
l The SIM card slots support double-card
single-standby.
l The router must use industrial SIM cards.
l The mounting hole above the SIM card
slots is used to fix the SIM card cover
with a screw.
5 RESET button
NOTE
This button is used to reset the router.
l To restore the factory settings, hold down
the button for at least 5 seconds.
l To reset the system, press the button.
Resetting the router will interrupt services.
Exercise caution when deciding to press this
button.
6 USB interface (host)
7 Reserved 3G/LTE antenna interface 8 3G/LTE antenna interface
9 GPS antenna interface 10 Two Wi-Fi antenna interfaces
Indicator Description
Figure 3-41 shows indicators on the AR503GW-Lo router.
Huawei
AR500&AR510&AR531&AR550&1500&AR2500
Industrial Switch Routers
Hardware Description
3 Chassis
Issue 10 (2019-03-06) Copyright © Huawei Technologies Co., Ltd. 251
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