Bluetooth Shield v2 Low Energy

BLE Shield 2 stands for Bluetooth 4.0 Low Energy Shield version 2. It is designed to work with Arduino boards, including Arduino Uno, Mega 2560, Leonardo and Due. It allows you to connect your Arduino board with other BLE Central device like a smartphone or tablet.

Note: Headers of this product is shipped unsoldered.

Requirements

• iOS 6 or 7: iPhone 5 (all models), iPhone 4S, iPad Air, iPad (3rd gen or later), iPad mini (all models) and iPod touch (5th gen or later)
• Android 4.3 devices with BLE hardware: Nexus 4, Nexus 7 and Samsung Note 3.

Specification

• Nordic nRF8001 Bluetooth Low Energy connectivity IC
• Support Peripheral (Slave) role operation only - nRF8001 IC limitation
• Proprietary simple serial interface (ACI)

New Features in BLE Shield Version 2.1:

• Reset button is changed to “side button”
• Flexible REQN and RDYN pins selectable from pin 2 to 10
• The board is shorter than before and this allows it to fit on Arduino Yun physicall

More on http://redbearlab.com/bleshield/