UART Serial Bus Control: Allows for easy UART control of multiple servos, enhancing project prototyping efficiency. High Servo Capacity: Supports up to 253 ST/SC series serial bus servos, ideal for advanced robotic applications Versatile Power Supply Options: Integrates both DC5521 power jack and screw terminal for flexible power supply integration Multiple MCU Compatibility: Compatible with for Raspberry Pi, for Jetson, for Arduino, and STM32, enhancing its usability across various platforms. Compact Size and Integration: Saves space with its 42.00 x 33.00mm dimensions and easy-to-integrate design for space-limited projects. Hign-concerned Chemical:None Type:Servo Drives & Amplifiers POWER SUPPLY:DC 9-12.6V (ST series servo) WER SUPPLY CONNECTOR:5.5 x 2.1mm DC COMMUNICATION INTERFACE:UART DIMENSIONS:42.00 x 33.00mm MOUNTING HOLE SIZE:2.50mm MOUNTING HOLE SPACING:37.00 x 28.00mm The product appearance and printed words may vary depending on the batch, but this does not affect use. Colour:As Shown Material:PCB Package Contents: 4 x UART Serial Bus Control 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.