3 Wire Reed Switch Wiring Diagram

By | July 30, 2023



The 3 wire reed switch is a versatile and essential component in many electronic devices. Its simple design, consisting of a magnetically sensitive switch and two or three wires, allows for a variety of applications. In this article, we will discuss the basics of the 3 wire reed switch wiring diagram and how it can be used in different scenarios.

First, let's understand the anatomy of the 3 wire reed switch. It consists of two metal contacts encased in a glass tube that is filled with inert gas. When a magnetic field is applied, the contacts are pulled together, completing the circuit. The switch is normally open, meaning the circuit is not connected, and it only closes when the magnet is present.

In a typical 3 wire reed switch wiring diagram, one wire is connected to the common ground, while the other two wires are connected to the two contacts. When the magnet is near the switch, the two contacts are pulled together, and the circuit is completed. This setup allows for multiple switches to be connected in parallel, providing redundancy and reliability in case one switch fails.

One common application of the 3 wire reed switch is in security systems. By placing a magnet on a door or window and connecting it to the switch, the circuit is broken when the door or window is opened. This triggers an alarm, alerting the homeowner or security personnel. The same principle can be applied to detect the opening of drawers, cabinets, or even to monitor water levels in a tank.

Another popular use for the 3 wire reed switch is in automotive applications. It can be used to detect the position of the car's hood, trunk, or doors, triggering interior lights or alarms. It can also be used in combination with a float switch to monitor fuel levels in a gas tank.

In conclusion, the 3 wire reed switch wiring diagram is a simple yet powerful tool that can be used in a variety of electronic devices. Its versatility and reliability make it an essential component in many industries, from security systems to automotive applications. Understanding the basics of its wiring diagram can help you make the most out of this small yet mighty switch.


China Normally Open Proximity Switch Magnetic 2 Wire Or 3 Reed Sensor Inductance Position

China Normally Open Proximity Switch Magnetic 2 Wire Or 3 Reed Sensor Inductance Position


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