3-Pin Reed Switch | NO/NC Conversion | Magnetic Sensor 2.5x14mm

This 3-pin magnetic reed switch is a small sensor that reacts to a nearby magnet. Its third pin gives you access to both Normally Open (NO) and Normally Closed (NC) contacts. This lets you choose if a circuit completes or breaks when the magnet is present. Features and Benefits - NO and NC conversion - The 3-pin design provides both circuit types, giving you more options than a standard 2-pin switch. - 2.5x14mm glass enclosure - Its small size lets you install it in tight spaces for hidden sensing applications. - Quick response - It activates quickly when a magnetic field is introduced or removed. - SPDT configuration - It works as a Single-Pole, Double-Throw switch, letting you switch one input between two different outputs. Applications - Designing custom alarm sensors for doors and windows. - Detecting if a lid or enclosure on a project is open or closed. - Creating proximity triggers in robotics to sense when a part has reached its home position. What It Is This product is a 3-pin reed switch, supplied in a pack of five pieces. It functions as a magnetic sensor, measuring 2.5mm by 14mm. Reed switches are a type of proximity sensor, designed for low voltage applications below 50Vac or 75Vdc. A key feature is its ability to convert between Normally Open (NO) and Normally Closed (NC) configurations. This allows for flexible integration into various electronics modules and control circuits. Key Uses & Applications These 3-pin reed switches are primarily used as industrial sensors in various applications. As proximity sensors, they detect the presence or absence of a magnetic field without physical contact. Common uses include position sensing, door or window alarms, and level detection in small containers. Their NO/NC conversion capability makes them versatile for triggering different responses based on magnetic proximity. For example, they can activate a circuit when a magnet is near (NO) or break a circuit (NC). How to Choose When selecting a reed switch, consider its dimensions, such as the 2.5mm x 14mm size of this specific product, to ensure it fits the intended space. The 3-pin configuration and NO/NC conversion are important for circuit design flexibility. To test a proximity sensor like this, you would typically apply a known magnetic field and observe the electrical output change. Ensure the low voltage specification aligns with your application to avoid damage. For applications requiring detection beyond a few centimetres, consider alternative proximity sensor types such as optical sensors.