Description
A door jam ajar switch is a type of switch that is used to detect when a door is open or closed. It is typically located in the door jamb, near the hinges. When the door is closed, the switch makes contact and completes an electrical circuit. When the door is opened, the switch breaks the circuit.
Door jam ajar switches are used in a variety of applications, including:
- Vehicles: In vehicles, they are used to turn on the interior lights when a door is opened, and to alert the driver if a door is open when the vehicle is moving.
- Security systems: Can be used in security systems to detect when a door is opened, which can trigger an alarm.
- Home automation systems: Can be used in home automation systems to control lights, thermostats, and other devices.
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