Fire alarm and other emergency switches are typically non-reversible; sometimes a piece of glass must be broken to activate the alarm.
Similarly, many emergency handles and levers are not meant to be opened regularly, and can therefore be protected with a Tamper Evident plastic security seal.
Tamper Evident plastic security seals can help to prevent handles from misuse, but if they are used, the plastic security seals break and maintenance/security personnel are made aware of the situation.
23.09.2009










