The regulator combines XL4016 switched voltage regulator circuit and MBR10200 bidirectional, the maximum input voltage can be 40V, the output voltage is 1.25-36V continuously adjustable.< /p> Multiple protections: overcurrent protection, overtemperature protection and short circuit protection, etc. This DC converter can be installed on the panel: 1. Drill a 7mm hole on the panel; 2. Insert the potentiometer handle out of the panel; 3. Lock the screws and install the knob. This voltage regulator has a high conversion efficiency which is up to 94%, in addition, it comes with a switching frequency of 180KHz. Note: The maximum output current can be up to 8A and it should work with the fan under this maximum current; It is recommended to use the current within 5A for long-term use.