The **M2AS1-6124-R** is a specific electronic component typically categorized as a **Magnetic/Electromagnetic Buzzer** or a **Transducer**. It is designed to convert electrical signals into audible sound, commonly used in automotive, industrial, and consumer electronics. --- ### 1. Key Technical Specifications Based on the standard parameters for the M2AS series, here are the general technical characteristics: | Parameter | Typical Value | Unit | | :--- | :--- | :--- | | **Rated Voltage** | 12 | VDC | | **Operating Voltage** | 9.0 ~ 15.0 | VDC | | **Rated Current** | Max. 30 | mA | | **Sound Pressure Level (SPL)** | Min. 85 (at 10cm) | dB | | **Resonant Frequency** | 2400 ± 300 | Hz | | **Operating Temperature** | -40 ~ +85 | °C | | **Mounting Type** | Through-hole (DIP) | - | --- ### 2. Component Structure and Materials The "R" suffix often denotes compliance with environmental standards or specific packaging requirements (e.g., RoHS compliance or Reel packaging). * **Housing Material:** Usually PBT (Polybutylene Terephthalate) or PPS, which are high-temperature plastics capable of withstanding wave soldering. * **Internal Magnet:** A permanent magnet used to create the magnetic field necessary for the diaphragm movement. * **Diaphragm:** A thin metal plate that vibrates when the internal coil is energized, producing sound waves. --- ### 3. Electronic Functionality The M2AS1-6124-R is likely an **Indicator type** (Internal Circuitry included). 1. **Oscillation:** Unlike a simple transducer which requires an external AC signal, this part often contains an internal oscillation circuit. When a DC voltage (12V) is applied, it automatically produces a continuous tone. 2. **Polarity:** Being a DC device, it has specific **Positive (+)** and **Negative (-)** terminals. Reversing the polarity will result in no sound and could potentially damage the internal driver. 3. **Drive Circuitry:** It can be driven directly by a microcontroller using a transistor (like a 2N2222 or a MOSFET) to handle the 30mA current draw. --- ### 4. Common Applications * **Automotive:** Seatbelt reminders, turn signal indicators, or backup sensors. * **Medical Equipment:** Alarm systems for heart rate monitors or infusion pumps. * **Security:** Keypad entry confirmation sounds or low-battery alerts. * **Industrial:** Panel board indicators and error alerts.