Hi-flying HF2111A Manual - Page 8

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HF2111A GPRS DTU User Manual

2.2. HF2111A Interface

Function
External
Interface
LED
Indicator
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Figure 2.
HF2111A Interface

HF2111A Interface Definition

Name
DC
DCPower 9~36V Input
RS485 A+ Connector
RS485 B- Connector
RS232 Rxd Connector
RS485/RS232
RS232 Txd Connector
Use either RS485 or RS232(Can not work
both)
SIM Card
Standard Sim Card Slot
Earth
Connect to Protect GND
Antenna
GPRS SMA Antenna
RS232
9-PIN RS232
Network Status LED(Function is reserved)
Off: No network connection
NET
2s On -> 2s Off: Network connection is OK
100ms On -> 100ms Off: Network is in
transferring
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Description