Security signs on building walls

Has anyone dealt with an owner whose legal counsel told him he was required to post a sign about security camera installations, when the Bylaws and Declaration are clear about no signs on buildings unless approved by Board? Owner put sign in a place that is not acceptable to the Board and was offered some less conspicuous places to post his sign, but he seems to think what his lawyer has required can override the Condo Bylaws and Declaration. The Board offered several options for re-placing the sign so that it was not visible to all owners. This owner claims that does not meet the legal requirement her lawyer gave him.

Ideas for responding without creating larger rumble?

Give him a choice: remove the camera and the sign or just remove the sign.

BTW, how did he get permission to put a camera on the outside of the building? I assume it is on outside of building since the sign seems to be on the outside.

This owner did not offer any authoritative source for this, did he? And he did not provide any written advice from his attorney with a citation of authorities, did he? All you have is his unverified word that his attorney told him this, which may or may not be an accurate recitation of what the attorney did say.

I wonder if there is a statue in his state that requires the posting of signs. There might be just not listed under the section regarding condominiums. Perhaps in the regular real estate section.

Not exactly the same, but in NE we can not tow vehicles unless there is a sign posted informing of a possible tow.

I did a brief search on Oregon Statutes and didn't find anything requiring the posting of signs for this.