Chelsea Online

Cyntech Raspberry Pi B+ & Pi 2 GPIO Breakout Boards, Cobbler, Split and Paddle - Cyntech CTLGPIOPROTECBPLUS-01, The Cyntech Protected GPIO Extender is great for safeguarding your Pi from inadvertant short circuits or overvoltages. Each GPIO is protected from excessive currents by a 330 Ohm resistor, and from overvoltages by a zener diode, great when you are prototyping. This means that you can happily connect your Pi to 5V sensors. The board is supplied with connectors for you to solder. Preserve your Pi, protect it today. Cyntech Protected GPIO Extender with 330R Resistors and Zener Diodes