[RF NANO]: The main chip is ATMEGA328P-MU QFN32, and the latest bootloader (for Arduino IDE 1.8.8) is programmerd.[STRONG FUNCTION]:for Emakefun RF-Nano-Board integrates a NRF24L01+ module with arduino nano v3.0 board, which is very convenient for application scenarios such as directly connect various wireless.[HIGH QUALITY]: plastic material and Immersion Gold Technology,keep great quality.[SMALL VOLUME]:The PCB size is only 48mm x 18mm, the pin is fully compatible with Nano V3.0,No Soldering needed. The micro-usb port is more convenient to use.Architecture AVROperating Voltage 5 VFlash Memory 32 KB of which 2 KB used by bootloaderSRAM 2 KBClock Speed 16 MHzAnalog I/O Pins 8EEPROM 1 KBDC Current per I/O Pins 40 mA (I/O Pins)Input Voltage 7-12 VDigital I/O Pins 22PWM Output 6Power Consumption 19 mAColour:blackMaterial:plasticPackage Contents:1 * USB Upgrade Board For Arduino Nano V3.0Only the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and well make you feel satisfied.