With the GPS Shield you can add GPS functionality to your Arduino.
This is a multi-band antenna covering the cellular, GPS, and WiFi frequency bands.
The PMB-688 GPS module provides high performance with a SiRFstarIII chipset and integrated patch antenna.
The uM-FPU V3.1 math coprocessor is a full featured standalone math engine that is capable of crunching even the toughest of mathematical equations.
The uM-FPU v3.1 is a floating point math coprocessor for your microcontroller. Send the data via SPI or I2C, and get an accurate result back without loading down your main micro!
The Phidget RFID - Credit Card Tag is a 125 KHz Credit Card Sized RFID Tag.
The Voltage Sensor measures the differential voltage between the input terminals and outputs the difference proportionally.
The IR Distance Adapter is designed to interface the Sharp GP2D12 sensor to the PhidgetInterfaceKit 8/8/8 or the PhidgetTextLCD.
The Phidget Vibration Sensor is a piezo deflection sensor for the Phidget 8/8/8.