The **M2RT-55-R/CE** is a specialized electronic component, typically categorized as a **Magnetic Proximity Sensor** or a **Reed Switch Assembly**, often used in industrial automation, security systems, or pneumatic cylinder position sensing. Below is a breakdown of its technical specifications and electronic characteristics. --- ### 1. Technical Specifications | Parameter | Description | | :--- | :--- | | **Component Type** | Magnetic Reed Switch / Proximity Sensor | | **Contact Form** | Form A (Normally Open - NO) | | **Max Switching Voltage** | ~100V - 250V AC/DC (Varies by load) | | **Max Switching Current** | 0.5A - 1.0A | | **Switching Power** | 10VA - 50VA | | **Operating Temperature** | -10°C to +70°C | | **Cable Type** | 2-wire or 3-wire (Standard PVC/PUR jacket) | --- ### 2. Internal Electronic Construction The device functions based on magnetic induction principles: * **Reed Switch Element:** Inside the housing are two ferromagnetic blades (reeds) hermetically sealed in a glass envelope. * **Actuation:** When a permanent magnet (usually attached to a moving piston or door) comes within range, the magnetic field pulls the reeds together, closing the circuit. * **Protection Circuitry:** Many "CE" rated models include an internal **Varistor** or **Zener Diode** to protect against voltage spikes (Back EMF) when switching inductive loads. --- ### 3. Key Features & Certifications * **CE Marking:** Indicates compliance with European health, safety, and environmental protection standards (Low Voltage Directive). * **IP Rating:** Generally rated **IP67**, making it dust-tight and resistant to water immersion. * **Indicator LED:** Most versions include a built-in LED (usually red) to provide visual feedback when the sensor is triggered. --- ### 4. Wiring Diagram Representation In a standard 2-wire configuration, the sensor is wired in series with the load: ```text [Power Source (+)] ---- [Sensor (M2RT)] ---- [Load/PLC Input] ---- [Power Source (-)] ``` > **Note:** Always verify the specific polarity if the unit contains an LED, as the LED is polarity-sensitive. ---