Pin Description:-
5v:Â Power interface Power the module CONNECT TO DC 5v
GND:Â Connect to GND.
VDD:Â TTL UART interface The TTL UART serial interface, you can connect the MCU like 51MCU or ARM or MSP430 directly. The pin of VDD is used to match the voltage of the TTL.
SIM_TXD:Â SIM module Transmitter.
SIM_RXD:Â SIM module Receiver.
GND:If this pin is unused, keep open.
RST:Â RST the module, if this pin is unused, keep open.
Specifications :-
| Interface Type | TTL UART |
| Baud Rate | Adaptive (default), Support2400-115200 |
| Input Supply Voltage (VDC) | 5 ~ 20 |
| Power Interface | 2.54mm Pin Header/MICRO USB |
| Antenna Interface | ASMA, IPX |
| Voice Interface | 3.5mm |
| PCB Dimension (lxbxh)mm | 40.127.111.1 |
| Mounting hole dimensions | Hole diameter=3.8mm X-axis pitch=33.5mm Y-axis pitch=21.5mm |
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