Reed Switch Module

Reed Switch Module

This Reed Switch Module is a unique type of module only available at robotechbd.com. This unique Reed Switch Module makes using reed switches in electronics and robotics projects extremely easy! Perfect for school, college, or science fair projects.

Reed switches are a special kind of electrical switch, actuated (turned on and off or change over) by magnetism. The most common type features two thin, flexible, ferromagnetic metal wires or blades – the reeds – positioned slightly apart in a hermetically sealed glass bubble. These function as the reed switch contacts. It should also be noted that the change-over type has three reeds instead of two.

Two individual wire contacts, known as the reeds, are housed in a hermetically sealed glass bubble or envelope. These serve as the switch contacts. This bubble is often filled with an inert gas like nitrogen to help prevent particle build-up causing performance issues over time. Depending on the installation environment, the glass envelope may also be encased in plastic for added toughness.

Specification

• Module Type: Reed Switch Module
• Sensor Type: Magnetic Sensor
• Switch Type: Normally Open
• Sensor Size: 15 mm
• Arduino Compatible: Yes
• Operating Voltage: 3.3V – 12V
• Module Length: 35 mm
• Module Width: 28 mm
• Color: White

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A reed switch serves as an electromagnetic device utilized for regulating the electrical current within a circuit. It consists of two or more ferrous reeds enclosed within a small glass tube-like casing. When a magnetic field is applied in the proximity of the switch, the reeds become magnetized, causing them to move closer together or separate. The switching mechanism comprises two ferromagnetic blades positioned mere microns apart. These blades attract and pull together when approached by a magnet, thereby closing the normally open (NO) contacts and enabling the flow of electricity. Some reed switches also incorporate a non-ferromagnetic contact, resulting in a normally closed (NC) output. As an approaching magnet triggers the switch, the switching contact disengages and moves away.

Various metals, including tungsten and rhodium, are utilized for creating the contacts within the reed switch. In certain cases, mercury may be employed, requiring careful orientation for proper switching functionality. The contacts are hermetically sealed within a glass envelope, maintaining an internal pressure equivalent to the surrounding atmosphere, and filled with an inert gas, commonly nitrogen.

The Reed Switch Module offers a remarkably convenient solution for incorporating reed switches into electronics and robotics projects with utmost simplicity!

This special Reed Switch Module is designed & developed by Cybernetics Robo Ltd.