Step-Servo Co., Ltd. Offers professional stepper motor&drive solutions. High performance, yet low cost Supply voltage: +24~+40VDC Output current 1.3~3.5A Logic input current: 6mA~30mA Inaudible 20khz chopping frequency TTL compatible and optically isolated input signals Automatic idle-current reduction Mixed-decay current control for less motor heating 14 selectable resolutions in decimal and binary Microstep resolutions up to 51, 200 steps/rev Suitable for 4, 6, 8 lead motors Over-current, over-voltage and short-circuit protection Small size Environment: Avoid dust, oil frost, and corrosive gas Operating Temperature: 0~50 degree Celsius Humidity: 40 ~90%RH Vibration: 5.9m/s2Max Storage Temperature: -20~ +65 degree Celsius Weight: About 0.35kg Dimensions: 132X76X45mm RoHS compliant version P403 is available. All specifications is the same.