Check the listing for details. OSD In Wall Slider 100W Speaker Volume Control White Impedance Matching VMS100. Condition: Open box. Listed at 17.99 USD. Enhance your whole house audio experience with the OSD Audio VMS100 Impedance-Matching Volume Control Kit. This kit is designed for adjusting the volume of a pair of speakers in any room of your house where you want to add sound. With the impedance-matching feature, the VMS100 helps stabilize the ohm load going back to the amp or receiver to avoid overheating. The kit includes screws, and white, ivory, and almond trim plates so you can choose the color that best matches your room décor. The electronics inside the VSM100 are designed with a ruler-flat frequency response while the 12-step slider provides noise-free volume control and a wide range of listening volumes. This is a complete volume control kit that fits into a standard single-gang box and is compatible with almost any dedicated audio zone or whole house system! SpecificationsVolume Control Type: 100W Impedance Matching Slider StylePower Handling: 100W Peak; 50W RMS Per ChannelFrequency Response: 20Hz - 20kHzTotal Attenuation: 52 dB (Max)Steps: 12 (Make Before Break)Impedance Matching for 1/2, 4, 6, or 8 Pairs of Speakers*Can be Used as Non-Impedance Matching if Leaving Default on Jumper Setting at 1XWiring Requirement: Up to 14 Gauge WireRemovable Input and Output "Quick Connect" Phoenix ConnectorsFits in a Standard Single Gang Box - See LV1 for Mounting BracketUnit Dimensions: (L x H x D) 1.62" x 2.5" x 2.5"What's Included: White, Ivory and Almond Plates, Inserts, Screws, and Slider