Brand KEYES Model N/A Quantity 1 Color Blue Material RF4 Features Motor drive expansion board for Arduino Specification 2 x 5V servo motors (servos) port connected to the Arduino's high-resolution high-precision timer - no jitter; Up to four bi-directional DC motor and 4-channel PWM speed (about 0.5% resolution); Up to 2 stepper motor control single / two-step control staggered or micro-step and the rotation angle control; 4-channel H-bridge: L293D chip every road and bridge to provide .0.6 A (peak 1.2A) current and with a thermal power protection 4.5V to 36V; Pull-down resistor to ensure that the motor remains stopped on power; arge terminal terminals make it easier to wire (10 - 22AWG) and power; With the Arduino reset button; 2 terminal external power supply terminal to ensure the separation of logic and motor drive power; Compatible with Mega Diecimila & Duemilanove; Download easy-to-use Arduino software library rapid project development Application Provide a full range of spare parts available to do-it-yourself enthusiasts the DIY English Manual/Spec Yes Packing List 1 x Motor drive expansion board 1 x English user manual User Manual: http://m5.img.dxcdn.com/CDDriver/CD/sku.227033.PNG