Intelligent output device after charging full, automatically stop charging, to prevent mobile phones overcharge. Output voltage and current stable, 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 . 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: 94% 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 +/- 1-3cm.