NC NO Magnetic Switch Wired Recessed Door Sensor Hidden Window Contact Reed Switch for Alarm System Access Control Replace

The NC NO Magnetic Switch Wired Recessed Door Sensor has garnered attention for its versatility and functionality in various DIY projects, from alarm systems to creative engineering tasks like Rube Goldberg machines. Users appreciate the flexibility of being able to toggle between Normally Open (NO) and Normally Closed (NC) configurations, enabling multiple circuits to be run simultaneously. This feature particularly appeals to hobbyists engaged in building escape room puzzles, where different electrical states are often crucial for interactions and game mechanics. The product is noted for its effectiveness in triggering alarms or lights as part of larger projects, with one user successfully incorporating it into an intricate setup involving a boat and a sound-activated relay. However, not all experiences have been positive; a few users reported difficulties with sizing, indicating that its metric dimensions may not fit as expected in smaller drilled holes. More concerning is the feedback regarding safety, with one user mentioning that the switches began to emit smoke after a few weeks of use. This has raised alarm about their durability and the risk they might pose under prolonged operation. Overall, while the NC NO Magnetic Switch appears to be an effective tool for creative projects and basic alarm systems, potential buyers should be cautious of the sizing and structural integrity of the product. **