ITEM NAME:DC 9-60V 20A PWM AC Motor Speed Regulator Controller Module A#S Product Description Description: Specification: Input Voltage: DC 9-60V Suitable Current: rated 10A, max load 20A Adjust Range: 5-100% (for most motors) Install Hole Gap: 105 mm Net Weight: approx. 150 g Size: approx. 91 X 50 X 33 mm/3.58 X 1.97 X 1.3 in Note: DO NOT reverse connect. Included: 1 X Motor Speed Controller.Suitable Current: rated 10A, max load 20A. DO NOT reverse connect. Adjust Range: 5-100% (for most motors). Install Hole Gap: 105 mm. If item is defective after 3 months, you can still send it back to us.