General specifications:

Step angle accuracy: +-5% (full step, no load)

Resistance accuracy: +/- 10%

Inductance accuracy: +-20%

Temperature rise: maximum 80 degrees (rated current, two-phase conduction)

Ambient temperature----------- 20deg~+50deg

Insulation resistance: minimum 100MΩ, 500VDC

Insulation strength -------- 500VAC for one minute

Red: A +
Green: A-
Yellow: B +
Black: B-