Reed Switch | For Door & Window Alarms | NO/NC 14x23mm PS-3150

This door and window sensor uses a simple reed switch and a magnet. It detects when an entry point opens. It's a key piece for building a wired home security system. The sensor has both Normally Open (NO) and Normally Closed (NC) contacts. This makes it widely compatible. Features and Benefits - Two-part magnetic contact - The sensor's internal reed switch activates when the magnet moves away. It sends a clear open/closed signal to your system. - NO and NC contacts - You can wire it to fit the circuit needs of almost any alarm panel or security camera recorder. - Simple surface mount - You can install it easily on door or window frames. Use screws or adhesive tape. - Small 14x23mm housing - Its small size doesn't stand out. It won't get in the way of doors or windows working normally. Applications - Home alarm systems - Connect it to your main security panel. It will trigger an alarm if a door or window is opened. - Smart home automation - Pair it with a microcontroller. It can turn on lights or send a phone alert when a door opens. - Access monitoring - Use it to check the status of cabinets, safes, or restricted doors in an office or shop. What It Is This Reed Switch is a type of proximity sensor, specifically designed for door and window magnetic control. It operates as an inductive sensor, meaning it detects the presence of a magnetic field without physical contact. This particular model is 14x23mm and can function in both Normally Open (NO) and Normally Closed (NC) modes. Proximity sensors generally work by emitting an electromagnetic field or a beam of radiation and looking for changes in the return signal. In this case, the Reed Switch responds to a magnetic field to detect if a door or window is open or closed. Key Uses & Applications The primary application for this Reed Switch is in door and window alarms, where its 14x23mm dimensions allow for discreet installation. It functions as a crucial component in security systems, detecting when a door or window is opened. The NO/NC operation mode offers flexibility for various alarm circuit designs. Another common application for proximity sensors is in industrial settings for object detection or position sensing. For example, a barrel sensor might detect a component on a conveyor belt. This specific Reed Switch is optimised for magnetic control applications. How to Choose When selecting a Reed Switch, consider the specific application. For door and window alarms, the 14x23mm dimensions of this product are a key factor for fitting within frames. The choice between Normally Open and Normally Closed operation depends on the alarm system's requirements. To test a proximity sensor like this Reed Switch, you would typically use a multimeter to check for continuity changes when a magnet is brought near it. For general proximity sensor applications, consider the detection range (e.g., up to 5 cm for some optical sensors) and the environment, as some industrial sensors are designed for harsh conditions.