KNACRO 6V 9V 5-11V Step up to 12V 4A Boost Converter DC-DC Waterproof Step up Voltage Converter 3A Power Supply Regulator Transformer Module 5-11V to 12V 4A 48W Radio LED Lighting Electric Fan High-performance chips, synchronous rectification technology, high conversion rate of up to 93%, low heat, stable and reliable. Multiple protection: overcurrent protection, thermal protection, instantly absorb high-voltage protection. (Note: No reverse polarity protection, no short circuit protection, wiring carefully, otherwise it may damage the power supply.). Potting processWaterproof, dust, moisture, shock, for a variety of harsh environments. Aluminum alloy shell: This product uses aluminum alloy case, and more secure than traditional plastic shell, heat better. Shape, weight and wiring: weight of about 97g each. Volume Specifications: 58 * 40.5 * 22mm (L * W * H). Wiring: Input: red positive, black negative. Outputs: yellow line positive, black negative