Panasonic intercom, a combination of white and black. - Brand: Panasonic - Model: VL-MV188 - Model: VL-V564 - Function: Intercom - Color: White - Color: Black The main unit is yellowed, the voice cannot be heard from the main unit to the sub unit, the voice can be heard from the sub unit to the main unit, the image is displayed, and the sub unit is faded. When I bought a successor model and replaced it, I used the bolts that were originally used, so the mounting bolts for the successor model were left over. I am also including the mounting bolts for the successor model.