The **MA68TAG-R** is a specific type of passive Radio Frequency Identification (RFID) tag, often categorized as an "Asset Tag" or "Key Fob." It is commonly utilized in security systems, access control, and inventory tracking. Below is a breakdown of its electronic components, specifications, and functional characteristics. --- ### 1. Internal Electronic Components The device consists of three primary internal elements: | Component | Function | | :--- | :--- | | **Integrated Circuit (IC)** | The "brain" of the tag. It stores a unique 64-bit or 128-bit identification code and manages data modulation. | | **Antenna Coil** | A copper wire coil that picks up magnetic energy from the RFID reader and transmits the ID signal back via backscatter. | | **Capacitor** | Often integrated into the IC, it works with the antenna coil to form a resonant LC circuit tuned to a specific frequency. | --- ### 2. Technical Specifications The MA68TAG-R typically operates on low-frequency (LF) protocols. * **Operating Frequency:** 125 kHz (Standard for proximity access). * **Memory Type:** Read-Only (factory programmed with a unique ID). * **Read Range:** Typically 2cm to 10cm (depending on the reader's power). * **Material:** ABS Plastic housing (IP67 or IP68 rated for water resistance). * **Battery:** None (Passive device; powered by the reader’s induction field). --- ### 3. Functional Mechanism The electronic operation follows the **Inductive Coupling** principle: 1. **Energy Harvesting:** The RFID reader emits an electromagnetic field. When the MA68TAG-R enters this field, the internal antenna coil converts the magnetic energy into electricity. 2. **Activation:** The internal IC wakes up once it receives enough voltage. 3. **Data Transmission:** The IC modulates the magnetic field (Load Modulation) to send its unique ID code back to the reader. 4. **Authentication:** The reader decodes this signal and sends the ID to the controller to grant or deny access. --- ### 4. Key Applications Due to its robust electronic design, the MA68TAG-R is widely used in: * **Building Access:** Keychain fobs for offices and apartment complexes. * **Time & Attendance:** Clocking in/out for employees. * **Logistics:** Tracking high-value assets in a warehouse environment.