Features: High efficiency isolated step down power module converts 12V 90V input to stable 9V/4A output, featuring reinforced isolation design and two protections against reverse polarity connection and output short circuits for operational safety. Engineered with galvanics isolation technology to eliminates looping between input/output circuits, this ABS housed module prevents voltages spikes from damaging connecteds loads while incorporating MOSFET reverse polarity protections and automatic short circuit recovery. for electronics engineers, industrial automation systems designers, and enthusiasts requiring power conversion solution for sensitive microcontroller boards and measurement equipment. Perfectly suited for automotive electronics retrofitting, solar power monitoring systems, and laboratory test benches where stable isolated voltages regulation for operations. The toolless screw terminals design enables rapid deployment in field applications, while its ABS casing ensures durability in harsh environments with vibrations resistant construction. Specifications: Materials: ABS Input voltages: DC12-90V Output voltages: DC12V Output current: 12V 4A, continuous operations 3A Output ripples: 100mv (measured at 12v2a) Conversion efficiency: approximately 88%, measured at 48rpm at 12V 2A Product size: 88x53mm Package Includes: 1PC Isolated Step Down Power Module note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.