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About us (Solu ® ), Professional factory of circuit boards for Arduino, welcome to our store for more choices with best price. What we pursue is your satisfication of our service, not just for our goods.For any reason you are unsatisfied with our product at any time, simply contact support for exchange or refund. we will reply you about any question you ask within 24 hours Specifications : This IO Expansion Shield is specifically designed to facilitate an easy connection between Arduino Nano and many other devices. used for Arduino Nano direct, if your seal the Pin of the board also Compatible Arduino Duemilanove 2009 and UNO R1. AREF output 3.3V output 8 analog Pin with power output and GND 6 PWM Pin 1 Servo power input I2C expansion Pin Draw out all of the digital I/o mouth and analog I/o mouth, every IO mouth has the positive and negative power supply interface standard Increase the DC power supply interface. The NANO plate on the USB interface power supply current is actual only 50 ma, to bring high current equipment such as steering gear Size:6x5.3x1.3cm(approx) Package Includes : 1 * Expansion Shield for Arduino Nano *