and high quality Serial Bus Servo Driver Board, Integrates Servo Power Supply And Control Circuit, Applicable for STSC Series Serial Bus Servos, Small In Size, Easy to Integrate Supports connecting to a host or MCU to control the serial bus servos. Allows controlling up to 253 for STSC series serial bus servos at the same time (sufficient power supply required) 9-12.6V input (the input and the servo must be matching) Provides convenient serial bus servo control solution. Integrates control circuit to the stable operation of serial bus servo. Compact size and space saving, suitable for integration into sorts of space-limited projects Power Supply:DC9-12.6v ( Series Servo) Power Supply Connector:5.5x2.1mm Communication: Mounting Hole Size:.2.50mm Mounting Hole Spacing:.37x28mm/1.45x1.1inch Colour:Photo Color Material:plastic Package Contents: 1 x Serial Bus Servo Adapter Board Only the above package content, other products are not included. Note: Light reflection 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.