Short answer. It publicly marks an establishment sanctioned for facilitating child abuse. Under RA 7610 Section 11, the DSWD displays an "off limits" sign outside such an establishment for at least one year. Taking the sign down without authority is itself a crime, punishable by prision correccional.
What the law says
A sign with the words "off limits" shall be conspicuously displayed outside the establishments or enterprises by the Department of Social Welfare and Development for such period which shall not be less than one (1) year
RA 7610, Section 11 — Sanctions On Establishments. Read the full provision →
The sign is part of the sanction, not a warning
The 'off limits' sign is not a mere advisory. It follows the closure of an establishment that Section 11 targets — one found to promote or facilitate child prostitution, sexual abuse, trafficking, obscene publications or indecent shows. Once such a business is closed and its licence cancelled, the sign is placed to mark that status publicly. So its meaning is concrete: this is a place the State has sanctioned for exploitation of children, and it publicises the closure rather than letting the business quietly reopen or trade on its former reputation.
Who posts it, and for how long
The section is specific about both. The sign shall be conspicuously displayed outside the establishments or enterprises by the Department of Social Welfare and Development for such period which shall not be less than one (1) year. The DSWD is the body that posts it — not the police or the local government — and the minimum display period is a full year, with the Department able to set a longer one. The requirement that it be 'conspicuously displayed' means it is meant to be seen by the public, which is central to what the sign is for.
Taking it down is a crime
The law protects the sign itself. It provides that the unauthorized removal of such sign shall be punishable by prision correccional. That turns tampering with the sign into a distinct criminal act, separate from the underlying child-abuse offences that led to the closure. The point is to keep the public mark in place for its full period; an owner who quietly removes it to resume business, or anyone who takes it down without authority, commits a fresh offence in doing so.
How it fits the rest of Section 11
The sign works alongside the section's other consequences: immediate closure, cancellation of the licence, and prosecution of the owner or manager under this Act, the Revised Penal Code, or other special laws. It is the visible, public-facing piece of a wider sanction, ensuring the closure is not merely a paper order. For a member of the public, an 'off limits' sign signals an establishment the State has shut for these reasons; for an operator, it is a legally protected notice that cannot lawfully be removed early.