Features: It can control the load with 100V and current of 33A, and is very suitable for high power motors, dimmers With four independent MOSFET channel, it can control multiple devices at the same time, providing flexible application options, such as parallel connection of multiple motors or other loads. Optocoupler isolation technology is adopted to effectively prevent the influence on the control and ensuring safety of users and control circuits. Use 12V power supply, it is convenient for many common power supply systems, and is suitable for multiple scene applications such as automobiles and industrial equipment. With clearly marking port, the connection process is convenient for rapid prototyping or debugging. Specifications: Size:Approx. Approx.66x65.9mm/2.59x2.59inch Working: 12V Support circuit: 100V/33A Number of channel: 4 channel Package Includes: 2 Optional Package: Package 1 Include:1Pc Development Board Package 2 Include:3Pcs Development Board note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.