Maximum Power Per Channel:NO POWER Model Number:RCA Audio Switch Input Selection Board Channels:2(2.0) Motherboard and switch cable length 30CM Relay type 4-way selection/source switching/input selection board(actually adjustable 1-4) Using 1.6mm thick double-sided tin-plated PCB,to give the most direct source of the most fidelity switch,the board is stereo two-channel. Supply voltage single AC12-15V Switch board size 43.5mmx43.5mm,mounting hole 33.5x33.5mm Motherboard size 105mmx43.5mm,mounting hole 94x33.5mm Finished relay used for the Department of Branch relay,durability and reliability. Can switch CD/DVD/PHONO/AUX a total of 4 groups of inputs,and with LED light tube for gear switch instructions. Colour:Black Material:plastic+metal Package Contents: 1* RCA Audio Switch Input Selection Board Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.