Specifications: Features the PCA9685 chip centrally located on the small board. Includes power and green power LEDs for convenience. Allows for easy connection of 16 servo motors in 4 groups using 3-pin connectors (servo motor connectors are slightly wider than 0.1", accommodating 4 pairs of 0.1" connectors). Includes reverse polarity protection for the terminal block input. A large capacitor can be added to the V+ line (recommended in some cases). The maximum external input voltage depends on this 10V 1000uF capacitor. A 220ohm series resistor is placed on all PWM output lines to protect them and can easily drive LEDs. Type: PCA9685 Drive Module Voltage: DC5-10V Interface: IIC Material: PCB Features: Durable, Useful, Easy to Install Size: 2.5 cm x 6.1 cm / 0.98" x 2.4" (approx.) Notes: Due to differences in light and screen settings, the color of the item may vary slightly from the pictures. Please allow for a slight dimension difference due to manual measurement. Package Includes: 1 x PCA9685 Drive Module