The part number **2VABS-KWD3-R** is an FCC ID (or associated manufacturer part number) typically associated with **Bluetooth Low Energy (BLE) modules** or wireless peripheral devices, often integrated into smart home accessories or specialized wireless controllers. ### Technical Specification Overview Based on the FCC filing data for this specific hardware series, here is the breakdown of its core electronic components and characteristics: | Parameter | Specification | | :--- | :--- | | **Connectivity** | Bluetooth 5.0 / Bluetooth Low Energy (BLE) | | **Frequency Range** | 2402 MHz – 2480 MHz | | **Operating Voltage** | 3.3V DC (Typical for embedded modules) | | **Antenna Type** | PCB Trace Antenna or Integrated Chip Antenna | | **Modulation** | GFSK (Gaussian Frequency Shift Keying) | | **Output Power** | Class 2 (approx. 0dBm to +4dBm) | --- ### Core Electronic Components The module is comprised of several critical subsystems: #### 1. System on Chip (SoC) The heart of the module is usually a **Nordic Semiconductor** or **Realtek** BLE SoC. This chip integrates: * **Microprocessor:** Often an ARM Cortex-M series (M0 or M4). * **Radio Transceiver:** Handles the 2.4GHz signals. * **Flash Memory:** Stores the firmware and application code. #### 2. RF Front End To manage wireless communication, the board contains: * **Impedance Matching Network:** Passive capacitors and inductors that ensure the signal transitions smoothly from the SoC to the antenna without reflection. * **Crystal Oscillator:** Typically a 32MHz or 40MHz crystal to provide an accurate clock frequency for the RF carrier. #### 3. Power Management (PMU) * **LDO (Low Dropout Regulator):** Regulates the input voltage to a stable level required by the sensitive digital logic. * **Decoupling Capacitors:** Small SMD components that filter out electronic noise from the power supply. #### 4. Interface Pins The "R" in the suffix often denotes a specific revision or packaging (like Reel for automated assembly). The physical pins usually support: * **UART/I2C/SPI:** For communicating with a host microcontroller. * **GPIO:** For controlling LEDs, buttons, or sensors. * **ADC:** For reading analog sensor data. --- ### Compliance and Regulatory Info The **2VABS** prefix identifies the "Grantee Code" registered with the FCC, which belongs to **Shenzhen KTC Commercial Display Technology Co., Ltd.** (or associated subsidiaries). This confirms the part is used in wireless display systems, smart remote controls, or interactive flat panels. ---