Ok, im pretty convinced the BW cameras are inferior to the color cams for signal strength. I hook up a color cam and signal comes in fine, hook up the BW same plug same location and no signal or loses it. I CAN NOT RECOMEND THIS PRODUCT TO ANYONE, LOOK ELSWHERE IF YOU WANT A DECENT CAM SYSTEM, BW OR COLOR, NEITHER IS A DEPENDABLE 24/7 FUNCTIONAL SYSTEM