Item Type: Capacitor Power Filter Module Material: Aluminum Alloy Interface: DC2.1 Voltage: 5V Package List 1 x Power Filter 1 x DC2.1 Cable 2 x Adaptor 1COMMON MODE REJECTION Capacitor power filter module contains 20F super capacitor and intelligent buffer system with common mode rejection effect. 2MICRO CAPACITOR FILTER: 5V power supply filter module also built in 6 groups of micro capacitor filter, specializing in high frequency filtering, including 1uF, 100nF, 10nF, 1nF, 100pF, 10pF. 3VOLTAGE INDICATOR: Capacitor power filter module with input voltage indicator 10 percent100 percent indication, easy to display, clear at a glance. 4ALUMINUM ALLOY: Capacitor power filter module is made of premium aluminum alloy, sturdy and durable, wear resistance and rust proof, with long service life. 5MAIN PURPOSE: EMI power filter can filter the frequency of specific frequency in the power line or the frequency outside the frequency point, in order to obtain the power signal of specific frequency, or eliminate the power signal of specific frequency.