The manual call point ROP 21 is intended for passing on information about a fire to the fire alarm control unit by a person who saw the fire and has manually activated it. The device can operate on the detection loops or stub detection circuits controlled by the FAS fire alarm control unit only.
The element is equipped with a ratchet which allows to restore the supervision state again without the need to replace any elements. The element has a double-sided short-circuit isolator.