The **M2AS1-4111-R2/N** is a specific part number belonging to the **M2AS series**, which typically identifies high-performance **Magnetic Proximity Sensors** or **Speed Sensors** often used in automotive and industrial applications. Below is a breakdown of the electronic characteristics and specifications typical for this component. --- ### 1. General Specifications The M2AS series is generally designed for non-contact detection of rotating ferrous targets (like gear teeth) or magnetic encoders. | Feature | Description | | :--- | :--- | | **Technology** | Hall Effect or Variable Reluctance (depending on specific revision) | | **Output Type** | Digital (Square Wave) | | **Supply Voltage** | Typically 5V to 24V DC | | **Connection Type** | Integrated Connector or Pigtail Lead | | **Housing Material** | Stainless Steel or High-Grade Thermoplastic | --- ### 2. Internal Electronic Components The device is not just a passive sensor; it contains an integrated circuit (IC) to process signals: * **Sensing Element:** A Hall-effect chip that detects changes in magnetic flux density. * **Signal Conditioner:** An internal Schmidt trigger that converts the raw analog magnetic signal into a clean digital pulse. * **Protection Circuitry:** Often includes Reverse Polarity Protection and Overvoltage Protection to prevent damage during installation. * **Pull-up Resistor:** Often requires an external pull-up resistor (typically 1kΩ to 10kΩ) depending on the controller interface. --- ### 3. Pinout and Wiring (Typical) While you should always consult the specific datasheet for the "R2/N" revision, standard wiring for this class of sensor follows this logic: | Pin/Wire Color | Function | Description | | :--- | :--- | :--- | | **Red / Pin 1** | **VCC** | Power Supply (Input voltage) | | **Black / Pin 2** | **GND** | Ground (Common) | | **White or Green** | **Signal** | Open Collector or Push-Pull Output | --- ### 4. Key Application Use-Cases * **Engine Timing:** Measuring crankshaft or camshaft position. * **ABS Systems:** Monitoring wheel speed for anti-lock braking. * **Industrial Automation:** Counting revolutions of a gear or sprocket in a conveyor system. * **Transmission Control:** Detecting input/output shaft speeds. --- ### 5. Part Number Decoding (Standard Format) * **M2AS:** Series Identifier (Magnetic Active Sensor). * **4111:** Dimensional and electrical configuration code (Barrel length, thread pitch). * **R2:** Revision 2 (indicates updated internal circuitry or housing). * **N:** Output polarity (often denotes NPN / Sinking output). ---