I called the installer. He didn't see a problem and called Nortek tech line and they insisted it was all 5 of the main boards on the inside heads. (Sounded odd to me and the installer.) ...

For external use. 11 Way Phosphor Bronze on Stainless Steel Slip Rings. Manual and auto pan. 250mm in diameter the Legacy 200 range of pan and tilt domes are designed to house compact cameras up to ...