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specifications:It has a nice standard 0.1"x0.1" prototying grid with big padsComes with Stacking headers and plain header, choose whichever you want when soldering togetherA IC pattern for adding DIP ICs up to 20 pins
Features 1. Standard For Shield interfaces and shape 2. Can continue to stack other For expansion boards 3. 3 M3 screw positioning holes for easy installation 4. High Drive (5V or 3.3V) normally open contact closure 5. Onboard relay indicator (red)
Specification: * Quad-Band 850 / 900/ 1800 / 1900 MHz - would work on GSM networks in all countries across the world. * GPRS multi-slot class 10/8 * GPRS mobile station class B * Compliant to GSM phase 2/2+ * Class 4 (2 W 850 / 900 MHz) * Class 1 (1 W 1800 / 1900MHz)