Imagine an Arduino Shield that can be...
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1. The SIEMENS TC35 is a standard AT commands Based GSM module, you can easily apply it with your own embedded system to creat a GSM wireless based data transfer module .Support Arduino!
2. The SIEMENS TC35 Module is AT Command - controlled gsm modem, via Serial Port (RS232/TTL communication).
3. Program source code would be provided so that buyers can use the module easily and get familiar with the module quickly.
4. Common applications are (sending/receiving) SMS control, phone calling.
5. Power supply: DC 5V