The **M2AS1-4212-R/N** is a specific model within the series of **Magnetic Proximity Sensors** (often categorized under Reed Switches or Magnetic Actuators), typically manufactured by companies like Misumi or specialized electronic component vendors. These parts are primarily used for position sensing and automation. --- ### 1. Technical Specifications The following table outlines the typical electrical and physical characteristics of this component series: | Parameter | Specification (Typical) | | :--- | :--- | | **Type** | Magnetic Proximity Sensor (Reed Switch Type) | | **Contact Form** | Form A (Normally Open) | | **Switching Voltage** | Max 100V DC / 125V AC | | **Switching Current** | Max 0.5A | | **Contact Capacity** | 10W / 10VA | | **Operating Temperature** | -10°C to +60°C | | **Cable Length** | Usually 1m to 2m (R/N denotes cable/connector variants) | --- ### 2. Breakdown of Model Suffixes The alphanumeric code provides specific details regarding the configuration: * **M2AS1**: The series identifier (Standard cylindrical or rectangular magnetic sensor). * **4212**: Represents the physical dimensions or the specific sensitivity range (At-value) of the internal reed element. * **-R / -N**: * **R**: Often indicates a **Round** cable exit or a specific **Resistance** protection circuit. * **N**: Typically signifies an **NPN** output type (if it is a solid-state Hall effect version) or a specific mounting orientation (North-pole sensitive). --- ### 3. Key Electronic Components & Working Principle The M2AS1-4212-R/N operates on the principle of magnetism: 1. **Internal Reed Switch**: Contains two ferromagnetic blades (reeds) encapsulated in a glass tube. When a permanent magnet moves within the "sensing distance," the blades become magnetized and pull together, closing the circuit. 2. **Protective Resistor/Diode**: Some models in this series include a built-in resistor to limit inrush current or a flyback diode to protect the switch from inductive loads (like small relays). 3. **Housing**: Usually encased in a non-magnetic resin or stainless steel body to prevent interference with the magnetic field. --- ### 4. Typical Applications * **Pneumatic Cylinder Sensing**: Detecting the "End of Stroke" for pistons. * **Safety Interlocks**: Ensuring doors or guards are closed before a machine starts. * **Counting**: High-speed counting of rotating parts equipped with a magnet. ---