### AS05004PR-2-WR-R Overview The **AS05004PR-2-WR-R** is a high-quality, miniature waterproof speaker manufactured by **PUI Audio**. It is part of their "AS" series, specifically designed for applications where space is limited but moisture protection is required. --- ### Technical Specifications Below are the primary electronic and physical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Speaker Type** | Dynamic, Permanent Magnet | | **Impedance** | 4 Ohms ±15% | | **Rated Power (RMS)** | 2.0 Watts | | **Max Power Handling** | 3.0 Watts | | **Frequency Range** | 200 Hz ~ 20,000 Hz | | **Sensitivity (SPL)** | 82 dB @ 1W / 0.5m | | **Ingress Protection** | IP65 (Waterproof/Dustproof) | | **Diaphragm Material** | Polyetheretherketone (PEEK) | --- ### Key Electronic & Design Features #### 1. Waterproofing (IP65 Rating) The "-WR" suffix in the part number indicates **Water Resistant**. The speaker utilizes a specialized PEEK diaphragm and a treated surround that prevents water ingress into the voice coil and magnet assembly, making it suitable for outdoor or medical environments. #### 2. Compact Form Factor Measuring approximately **50mm x 50mm** (or roughly 2 inches), it is designed for low-profile enclosures. It features a square frame with pre-drilled mounting holes for secure mechanical integration. #### 3. High-Output Performance Despite its small size, the 2.0W rated power allows for clear audio signaling and voice reproduction. The 4-ohm impedance is ideal for modern Class-D audio amplifiers commonly found in battery-powered IoT devices. #### 4. Connectivity The "-R" at the end of the part number typically denotes **RoHS compliance**. These speakers usually come with lead wires (WR-R version) rather than solder pads, allowing for easier integration into sealed housings without direct soldering onto the speaker frame. --- ### Common Applications * **Medical Devices:** Handheld monitors or diagnostic tools requiring sanitization. * **Outdoor Security:** Intercoms, smart doorbells, and sirens. * **IoT Gateways:** Voice prompts for smart home hubs located in kitchens or bathrooms. * **Marine Electronics:** Instrument panels for small watercraft. ---