Fangrui Product Details Intelligent Output Device After Charging Full, Automatically Stop Charging, To Prevent Mobile Phones Overcharge. Output Voltage And Current Stable, Will Not Harm User Devices. Protection Function: Charging Overcharge Protection, Over-discharge Protection, Overcurrent Protection. Can Accurately Adjust Output Voltage And Current. Stable And Reliable,high Efficiency,fine Workmanship And Durable. Product Name: Dc-dc Boost Power Module Product Model: Xh-m348 Boost Chip: Dual Xl6012 Chips Input Voltage: Dc 5-24v Output Voltage: Dc 24v Maximum Current: 10a Maximum Power: 240w Conversion Efficiency: Greater Than Switching Frequency: 180khz Other Functions: Thermal Shutdown, Soft Start, Current Limiting Colour:black Material:plastic Package Contents: 1 X Voltage Boost 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 +/-