T-681F/ T-682F/ T-683F/ T-684F/ T-685F Volume Control with Relay Datasheet Manual Firmware FeatureModelT-681FT-682F T-683F T-684FT-685FRated Power6W15W30W60W 100WLine Input100VAttenuation Per Step3dBTotal Attenuation33dBAttenuation Positions10 plus offMaterialPCFinished ColorWhiteMountingFlush and Surface