Up to 253 Servos Control: This bus servo driver board allows simultaneous control of up to 253 SC/ST series serial bus servos (provided the power supply is sufficient). Easy Control: This bus servo adapter connects to your host computer or MCU to control the rotation of bus servos, offering a convenient bus servo control solution. 9 to 12.6V Input: This serial bus servo driver board utilizes a 9 to 12.6V voltage input (input voltage must match servo voltage). Stable Control Circuit: This bus servo control circuit driver board integrates servo power supply and control circuits, ensuring stable operation of bus servos. Space-Saving: This bus servo driver board for ST SC series is small and compact, saving space and making it suitable for embedding in various projects with high space requirements. Item Type: Bus Servo Driver Board Material: Printed Circuit Board Input Voltage: 9 to 12.6V Voltage Input (Input voltage must match servo voltage) Communication Interface: UART Power Supply Interface: 5.5x2.1mm DC Product Size: Approx. 42mm x 33mm / 1.65 x 1.30in (Manual measurement, slight error may occur) Fixed Hole Diameter: Approx. 2.5mm / 0.10in (Manual measurement, slight error may occur) 1 x Bus Servo Driver Board 2 x Accessories