Instruction features: arbitrary programmable (can achieve a of complex operations: positioning control and non-positioning control). Multiple working status including automatic running state, manual running state, program editing state, parameter setting state. 8-bit digital tube display, manual or automatic state display, run or stop state display, step or count value or program display, edit program, parameter display, input or output state display, CP pulse and direction display. Maximum output frequency: 40KHz (especially suitable for controlling subdivision drive). High output frequency resolution of which is as accurate as 1Hz. Condition: and high quality Product Name: Single Axis Stepper Motor Controller Power Supply: AC 220V (power supply error is not 15 percent ) Instruction Specification: Arbitrary Programmable Input: 6 (Optoelectronic Isolation) Output: 3 (Optoelectronic Isolation) size:72x72x95mm Material:Plastic and metal colour:black Package Contents: 1 x Controller Only the above package content, other products are not included. Note: Light 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.