Isolated output; Does not distinguish between positive and negative; Support reverse connection protection; Support charging function; Small volume; Product Name:USB DC Isolated Power Supply Module Working Voltage:DC 12V-80V Output Voltage:DC 5V Output Current:1A(The larger the input voltage, the larger the output current) Output Power:5W Conversion efficiency:About 96% Working Temperature range:-40Celsius~85Celsius Working Humidity range:0%-95%RH Size:34x26x17mm Colour:As shown Material:PC+Metal Package Contents: 5 x USB DC Isolated Power Supply Module 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.