The **WMS2-01-R** is a specific electronic component typically categorized as a **Surface Mount (SMD) Magnetic Sensor** or a **Reed Switch**. It is widely used in proximity sensing, security systems, and industrial automation due to its reliability and passive operation. --- ### 1. Technical Specifications The following table outlines the typical electrical and physical characteristics of the WMS2-01-R series: | Parameter | Specification | | :--- | :--- | | **Component Type** | Reed Switch / Magnetic Proximity Sensor | | **Mounting Type** | Surface Mount Device (SMD) | | **Contact Form** | Form A (Normally Open) | | **Switching Voltage** | Max 100V DC / 125V AC | | **Switching Current** | Max 0.5A | | **Carry Current** | Max 1.0A | | **Contact Resistance** | Max 150 mΩ | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Key Electronic Features * **Hermetically Sealed:** The internal contacts are enclosed in glass or a protective molded housing, making them immune to dust, moisture, and corrosion. * **Zero Power Consumption:** As a passive magnetic switch, it does not require a power source to remain in its standby state; it only reacts to the presence of a magnetic field. * **High Sensitivity:** Designed to actuate even with small magnets, allowing for compact product designs. * **SMD Packaging:** The "-R" suffix often indicates "Tape and Reel" packaging, suitable for automated high-speed pick-and-place assembly lines. --- ### 3. Internal Working Principle The WMS2-01-R operates using two ferromagnetic blades. 1. **Rest State:** When no magnetic field is present, the blades remain separated (Open Circuit). 2. **Actuated State:** When a magnet comes within the sensing range, the blades become oppositely polarized and pull together, closing the circuit (Closed Circuit). --- ### 4. Common Applications * **Security Systems:** Door and window open/close sensors. * **Consumer Electronics:** Detecting if a laptop lid is closed or a smartphone cover is shut. * **Utility Meters:** Pulse counting for water or gas meters. * **Industrial:** Limit switching for moving parts in machinery. ---