Detnov GTR048000A01 (RED-110) Surface-Mounted Fire Door Holder

A surface-mounted electromagnet that keeps the fire door in open position during normal use and releases the door when power is cut during alarm. It operates with 400N holding force and 24Vdc power supply; the magnet is IP54 protected and the holder body is IP42 protected. It is a simple version without a manual release button. It comes with a spherical hinged counter plate and is protected against reverse polarity connection.