The Lynxmotion Smart Servos (LSS) are compact, modular and configurable actuators designed to be an evolution of the standard RC servo for use in multi-degree-of-freedom robotics. The servo lineup currently includes three “smart servos” which appear physically the same, sharing the same dimensions, mounting points and output spline, but differing in maximum torque and speed.
Website: https://www.robotshop.com/info/wiki/lynxmotion/view/lynxmotion-smart-servo/