门控开关，DSW

Feature: Door switch with a voltage free contact to switch an electrical device on and off within floor standing enclosures. The door switch is mounted directly to the enclosure's frame

Advantage: The door switch can be installed easily inside the enclosure and is operated by either opening or closing the enclosure's door in order to switch electrical devices on or off automatically, without any additional operation

Benefit: The door switch does not waste additional energy as it breaks electrical contact with the connected device when operated. For electrical lights, this means that when the door is closed the light will turn off and for air conditioning units, when the door is opened the unit will turn off preventing any unnecessary condensation