The **AS04008PO-WR-R** is a high-quality, miniature speaker manufactured by **PUI Audio**. It is specifically designed for applications requiring a compact footprint, weather resistance, and clear audio output. --- ## 1. Key Specifications The following table summarizes the primary electrical and physical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Speaker Type** | Dynamic, Permanent Magnet | | **Impedance** | 8 Ohms (±15%) | | **Rated Power** | 0.5 Watts | | **Maximum Power** | 0.8 Watts | | **Frequency Range** | 500 Hz ~ 20,000 Hz | | **Sound Pressure Level (SPL)** | 84 dB @ 0.5W/0.1M | | **Dimensions** | 40mm x 40mm | | **Depth** | 4.8 mm | | **Weight** | ~4.5 grams | --- ## 2. Technical Features ### Weather Resistance (WR) The "WR" suffix in the part number indicates **Weather Resistance**. * **Material:** It typically features a Mylar (plastic) cone rather than paper. * **Durability:** This makes it resistant to humidity and moisture, allowing it to function in environments where standard speakers would degrade. ### Magnet Material It utilizes a **Neodymium (NdFeB)** magnet. This allows the speaker to be incredibly thin and lightweight while maintaining a high magnetic flux density for strong audio performance. ### Mounting and Connectivity * **Shape:** Square frame with mounting holes. * **Connection:** Lead wires (pre-soldered) for easy integration into a PCB or housing. --- ## 3. Applications Due to its slim profile and ruggedized design, the AS04008PO-WR-R is commonly found in: 1. **IoT Devices:** Smart doorbells and outdoor sensors. 2. **Medical Devices:** Portable monitors and diagnostic equipment. 3. **Industrial Equipment:** Control panels and alarm systems. 4. **Handheld Electronics:** Scanners and mobile communication tools. --- ## 4. Frequency Response Considerations The Resonant Frequency ($F_0$) is approximately **500 Hz**. Because it is a small speaker, it excels in the **mid-to-high frequency range** (voice and alerts) but will have limited bass response.