Features: brand new and high quality for most PD devices on the market. Connection method: the red wire is connected to the positive pole of the power supply (12-24V+) the black wire is connected to the negative pole. Installation method: Open the hole to install about 172x40mm, then put it in the product, and fix it with screws. PD port:5V/3.0A,9V/3.0A,12V/3.0A,15V/2.25A,20V/2.25A(Note: This mode needs to be connected to the power supply voltage greater than 20V) Power outlet input voltage:dc 12-24v,rated output power:12V 15A 24V 10A. Product input voltage: 12-24V. Voltmeter measuring range: for DC 2.5-30V.(The for DC voltmeter monitors the voltage of the battery in real for time, and can judge whether the battery is charging according to the voltage.) Specifications: Material:ABS Size:Approx.21x10.7x5cm/8.27x4.21x1.97in Type:PD Fast Charging Port,PD for QC Fast Charging Port Net Weight:185-190g Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Digtal Voltmeter