EFKA AB321/DC1550 Servo motor unit is a multi-functional control unit for sewing machines, featuring needling position, foot lift, high lift walking foot, trimmer, thread tension release, and backtack. The motor is supplied with synchronizer and is programmable with the C200 compiler. It's customizable for Lockstitch machines, Chainstitch machines, and is connectable with the stepper motor control SM210A. It also features flash technology and USB Memory Stick connectivity, a pedal operation with EB401 actuator, short-circuit proof outputs with overload protection, and more. The motor is a DC155 brushless direct current unit built for medium-heavy to heavy sewing machines with integrated incremental encoder and universal mounting. Optional control panels V810, V820, V850, and V900 are available.