This Fire Door Release Control label has been designed to satisfy the requirements of the British Standards as described below:
BS 7273-4:2015 Clause11.1.2 states…
Unless there is an audible warning of at least 10s duration prior to release of self-closing fire doors, any central control to release self-closing fire doors should be labelled “FIRE DOOR RELEASE CONTROL. WARNING: SUDDEN RELEASE OF FIRE DOORS CAN CAUSE INJURY TO PEOPLE”.