SIM900A 1800/1900 MHz Wireless Erweiterungsmodul GSM GPRS Shield Dev Board
10,94 €
The onboard SMA (default) and IPXmini antenna interface, SIM900A interface reserved reset. GND - GNDSIMR SIM900A RXD, TTL level. can not be directly connected to the 232 levelSIMT SIM900A TXD, TTL level.
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