1、POWERFUL AND STABLE: Adopt pulse width technology to make the speed more stable, and the force is stronger at low speed 2、VARIOUS PROTECTION DEVICE: With short circuit, over current, over temperature protection cut off device, making the performance more reliable 3、ELIMINATE EXCESSIVE STARTING CURRENT: DC motor governor come with soft start device to eliminate excessive motor starting current, more stable and reliable 4、COMPLETELY ISOLATED FOR SAFETY: High and low voltage signals are completely isolated, making the motor speed controller safer to use 5、CORROSION RESISTANT ALUMINUM ALLOY: Made of good quality aluminum material, light weight, possess good strength and good corrosion resistance Item Type: DC Motor Governor Material: Aluminum alloy Model Input voltage Armature voltage Armature current Field voltage Field current AC 90~260V-DC 0~90V AC 90~260V DC 0~90V 8A 0.9 times the input voltage 1A AC 90~260V-DC 0~110V AC 90~260V DC 0~110V AC 180~260V-DC 0~180V AC 180~260V DC 0~180V AC 180~260V-DC 0~220V AC 180~260V DC 0~220V 1 x DC Motor Governor 1 x Knob