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Arduino GPRS SIMCOM SIM900 QUAD BAND GSM SHIELD

Arduino GPRS SIMCOM SIM900 QUAD BAND GSM SHIELD

On this post it is showed the basics to work with GPRS SIMCOM SIM900 quad band GSM shield fully compatible with Arduino. This shield has the following features: Quad-Band 850/900/1800/1900MHz GPRS multi-slot class 10/8 GPRS mobile station class B Compliant to GSM phase 2/2+ Class 4 (2W@850/900MHz) Class 1 (1W@1800/1900MHz) Control via commands (GSM 07.07, 07.05 and SIMCOM enhanced AT Commands) Short message service Free serial port selection 3.5 inch standard sonic sockets for MIC and phone Operation temperature: -40℃…

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RS485 Communication

RS485 Communication

Arduino based PLC through RS485 port can connect with other devices which also use RS485 communication port PLC available to use RS485: 20 I/Os PLC: Ardbox Analog Ardbox Relay Ethernet PLC: M-duino 21 M-duino 42 M-duino 58 M-duino 19R M-duino 38R M-duino 57R