What is this?The In-Line DSL Splitter Filter is an electronic device that connects the phone and the signal source, filters the signal transmission to make the signal transmission clearer, and is suitable for landline phones. Widely used in home and officeWhat will I get?The In-Line DSL Splitter Filter provides here,Type: 6P2CColor: WhiteTotal Size : 54x 39x23mm / 2.13 x 1.54 x 0.91 inch(L x W x H)In the package of: 4 Pack x Phone Line Splitter Is there any advantages of the product?Phone Line Splitter can reduce noise and reduce interference in the process of signal transmission. Ensure stable signal transmissionHow to use it?Steps of installation: Insert the corresponding device according to the logo on the product, one for the modem and the other for the Phone line.