The **M2AS1-A331-R/CE** is a specialized industrial-grade magnetic sensor, typically part of a safety interlock system or position monitoring assembly. It is frequently associated with brands like **Bernstein AG** or similar industrial automation manufacturers. Below is a breakdown of its electronic characteristics and technical components. --- ### 1. Core Technical Specifications The device functions as a magnetically actuated proximity sensor, designed to provide feedback in harsh environments. | Specification | Details | | :--- | :--- | | **Sensor Type** | Magnetic Reed / Hall Effect Contact | | **Switching Voltage** | Typically 24V DC (Standard Industrial range) | | **Switching Current** | Up to 100mA - 500mA (load dependent) | | **Contact Type** | NO (Normally Open) or NC (Normally Closed) logic | | **Housing Material** | High-grade Plastic or Stainless Steel (Environment dependent) | | **Protection Rating** | IP67 (Dust tight and water immersion resistant) | --- ### 2. Internal Electronic Components The "R/CE" suffix often denotes specific wiring and certification standards (CE marking for European conformity). * **Reed Switch Element:** The heart of the device is a hermetically sealed glass tube containing two ferrous metal reeds. When a magnetic field (from an actuator) approaches, the reeds close or open. * **Protection Circuitry:** Internal resistors or diodes are often included to prevent "arcing" across the contacts and to protect against back-EMF when switching inductive loads. * **LED Indicator:** Many versions include a small surface-mount LED to provide visual status (Power/Actuated). * **M12 or M8 Connector:** The interface usually features gold-plated pins to ensure low contact resistance and prevent oxidation. --- ### 3. Connection Pinout (Typical) Standard industrial wiring for these sensors follows the M12 4-pin convention: | Pin Number | Wire Color | Function | | :--- | :--- | :--- | | **1** | Brown | +24V DC Supply | | **2** | White | Complementary Output (NC) | | **3** | Blue | 0V / Ground | | **4** | Black | Control Output (NO) | --- ### 4. Safety and Compliance The **CE** designation indicates the electronic parts meet the following directives: * **2014/30/EU:** Electromagnetic Compatibility (EMC) Directive. * **2011/65/EU:** RoHS (Restriction of Hazardous Substances). * **ISO 13849-1:** Often rated for safety categories (PL e) when used with a monitored safety relay. ---