D4A-2918-N

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Snap action limit switches, such as the D4A-2918-N, provide a reliable and cost-effective way to detect the position or movement of an object, such as the opening and closing of a door or window, or the movement of an elevator or escalator. They are available in a wide range of sizes and styles and are suitable for use in a variety of applications. The D4A-2918-N model is a small, compact, single-pole, single-throw (SPST) switch designed primarily for indoor use.

The D4A-2918- N produce an audible \'device\' when activated and are commonly used in the following applications:

• Home automation: detect the opening and closing of doors and windows, or the movement of blinds, shutters, and draperies.
• Elevators/escalators: detect door and car movement
• Lawn mowers: detect when the engine is running
• Machinery: detect when a machine is turned on/off or when a conveyor belt is running
• Vehicles: detect when a vehicle is started or stopped

The working principles of a snap action limit switch are fairly simple. The switch contains a metal plunger or arm that is activated when an object or surface is pressed or moved.When the plunger is pressed or moved, it trips the switch, completing the electrical circuit and activating the device. When the object or surface is released, the plunger returns to its original position, breaking the electrical circuit and deactivating the device.

The D4A-2918-N is rated for operation at AC and DC voltages of up to 500 V and/or 2Amps of current. It also features a range of operating temperatures ranging from -40°C to +125°C, and a choice of SPDT or SPST switch configurations. The entire switch comes in an all-inclusive package, which includes a stainless steel body, an adjustable mounting bracket, a switch actuator, a mounting stem, and a convenient wiring diagram.

The D4A-2918-N is designed for use in a wide variety of applications and is particularly suited for use in home automation, elevators, escalators, lawn mowers, machinery, and vehicles. It is easy to install and use, offers reliable performance, and is relatively low cost. With its simple operating principles, durable construction, and wide range of applications, the D4A-2918-N is a great choice for those who need an economical, accurate and reliable snap action limit switch.

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