Door Retaining Magnet

Door Retaining Magnets are a key part of a fire system, where the requirement for doors to close automatically upon a fire alarm being triggered. Otherwise known as Door Hold Open Magnets or Magnetic Door Holders. Door Retainers come in two main categories, either floor mounted or wall mounted. This particular model comes with a reset button, which means that the doors can be closed manually. The fire door magnet is powered by a transformer rectifier power supply, and are installed in buildings, between fire escape doors. When the fire prevention system detects a fire alarm, the armature plate is released allowing the door to close.
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