These reducer converters are high-reliability power . They feature wide input voltage, low power consumption, high efficiency, and high reliability. They can work safely and reliably in the -40C~80C range. Widely used for golf carts, motors, speakers, GPS, LED car display screens, air-conditioners, electric fans, solar energy, photo- power, DVD, industrialequipment, etc. Synchronous Rectification Technology: The synchronous rectifier circuit use MOSFET instead of a rectifier diode to greatly reduce the loss of the rectifier and improve the converter efficiency, Maximum Efficiency: equal 95%. Intelligent Protection: Assembled with a smart chip, has features of Over-current /Over-load /Low-load /Short-circuit /Over-heat intelligent protection. IP68 Waterproof Module: Compact aluminum shell with epoxy potting is IP68 waterproof, anti-shock, damp-proof, anti-dust protection, and better heat dissipation, adapts to a of harsh environments and extends the service life. Process: FR-4 multilayer lines, resistors, capacitors, and switch MOS tubes are SMD components with high integration, high reliability, high stability Easy Installation-Positive and negative wires can't be reversed connection Notes: It's normal that the case is hot when the converter's inside temp is over 113, converter will protect itself when the inside temp is over 185. Input Voltage: DC 36V/48V Output Voltage: DC 12V (FIXED OUTPUT) Output Current: 20A(MAX) Output Rated Power: 240W(MAX) Efficiency: equal 95% Ripple Wave: 50Mv Starting Delay time: less than equal 2S Enclosures: IP68 Operating Temperature:-40 ~ 80 Size:2.91x2.91x1.26 inch Colour:silver Material:Metal Package Contents: 2 x Voltage Reducer 36V/48V to 12V 20A 240W Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.