100 pieces of 4x28 mm magnetic reed switch sensors for DIY projects - Function and operation - Normally open NO contacts: the circuit closes in the presence of a magnetic field, enabling simple and reliable switching in a wide range of circuits. - Inductive/magnetic sensing based performance: well suited for proximity and position sensing tasks in hobby and prototype projects. - Size and construction - Compact 4x28 mm footprint for tight spaces and easy array configurations. - Green glass sealed design: durable housing with clear visual identification and proven reed contact reliability. - Glass encapsulated reed contacts for consistent, repeatable switching. - Compatibility and integration - Easy to integrate into existing circuits with straightforward wiring or PCB connections. - Suitable for a variety of electronics projects and automation applications requiring magnetic actuation. - Applications and use scenarios - DIY door/window alarms and security projects: detect magnet proximity to trigger alerts or actions. - Prototyping and robotics: end-of-travel or position sensing for moving parts, limit switches, and magnetic actuators. - Inductive or magnetic sensing tasks: simple, reliable switches for proximity sensing and basic automation control. - Practical benefits - Bulk quantity provides a cost-effective supply for multiple projects or streamlining production workflows. - Clear, consistent NO operation supports predictable circuit behavior across applications. - Specifications at a glance - Quantity: 100 pieces - Size: 4x28 mm - Type: magnetic reed switch, normally open - Body: green glass design - Performance: reliable switching suitable for inductive/magnetic sensing tasks These sensors deliver straightforward, dependable magnetic switching for a wide range of DIY and prototype applications, enabling easy circuit integration and scalable project development.