1. Power supply & Inputs terminals
2. Output terminals (Relay/Transistors)
3. RS232 / Programming interface (TTL signal)
4. Expansion/RS485 port
5. LCD panel (4X16 chars display & 10 panel keys)
6. GSM antenna socket
7. Socket of telephone crystal plug
8. Optional A-type USB interface
9. Mini-SD card socket
10. Audio input/output interface
11. Ethernet interface
12. SIM card holder (Under the LCD panel/ LED indicator cover)
2. Dimensions
Standard EXM CPU:
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