It only needs to be connected in series to the positive pole of the circuit, and does not need to be connected to the negative pole. There is no input voltage limit. (Ensure that the reverse voltage is lower than 40V) 300A high current MOS tube, one tube can pass 40A current, two tubes can pass 60A current 1.1 milliohm on-resistance, low loss, low heat generation 2US quickly responds to reverse polarity conditions, input and output are equivalent to diodes. Detect that the output voltage is greater than the input and immediately turn off the output, the detection value is in the millivolt level, and the corresponding speed is very fast, -40-125 degrees working environment temperature Widely used High performance-price ratio The operation is simple and easy to understand Small appearance Circuit board size: 50X34mm Copper foil thickness: 1.5oz use: Replace ordinary high-current diodes, batteries, solar panels, anti-reflow and anti-reflow. Connecting in series at the input end of the power supply is an Perfect choice for anti-reverse connection. Precautions: The input voltage is unlimited, but there is a reverse voltage requirement, and the reverse voltage is lower than 40V. The voltage of the output terminal cannot be higher than the input voltage 40V, for example: the input is connected to a 24V power supply, the output is connected to a battery, and it can be connected to 12V, 24V, 36V, 48V, 60V batteries, and cannot be connected to batteries above 72V. 72V output -24V input = 48V. Reverse voltage It's higher than 40V. The wire with no terminal can be welded below 6 square, and the terminal with terminal can also be welded from the bottom. Colour:purple+silver Material:PCB Package Contents: 2 x Diode Module