Pro Mini is based of the ATmega328 (AVR) microcontroller. Has 14 digital Inputs / Outputs (6 from which can be used as PWM outputs), 8 analog Inputs. Reset button.Mounting receptacles are included in the package but aren't soldered.For connection Pro Mini to the computer, it is necessary to use the USB-UART adapter, which you can find on our site. Or for updating of a firmware via the ISP interface (the programmator is required). Unregulated power is applied to RAW, with 4-9V (for 3.3V) and 6-9V (for 5V), and peak of 12V. The power supply regulator will reduce it to logic level. (Please note that the higher the input voltage the higher after current stabilizer. Operating current up to 350mA.