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/ automatic state display, run/ stop state display, step/ count value/ program display, edit program, parameter display, input/ 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%) Instruction Specification: Arbitrary Programmable Input: 6 (Optoelectronic Isolation) Output: 3 (Optoelectronic Isolation) size:72*72*95mm Material:Plastic + metal colour:black Package Contents: 1 * 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.