Mini ST-LINK/V2, in-circuit debugger/programmer for STM8 and STM32
The S9V11MA switching step-up/step-down regulator efficiently produces a...
Adafruit 1272 - Adafruit Ultimate GPS Logger Shield - Includes GPS Module
GSM/GPRS/GPS Shield, Phone Module, Arduino Shield Based on SIM908. Waveshare: GSM/GPRS/GPS Shield
Integrated quad-band GSM/GPRS and GPS navigation technology Arduino expansion shields. A credit card size only, according to the standard Arduino pin packaging, compatible with Arduino UNO, Leonardo, Mega and other mainboard. TEL0097
MG2639 SparkFun Cellular Shield is a perfect addition to any Arduino project that requires connectivity when there’s no WiFi or Ethernet access nearby. The ZTE MG2639 module, which this shield is built around, supports SMS, TCP, UDP, and can even be used to make or receive phone calls. CEL-13120)
GSM/GPRS/GPS Shield (B), Arduino Shield Based on SIM808