*Posted on July 2025 by Raspberry Pi Foundation*
Raspberry Pi has just released the **Radio Module 2 (RM2)**, a fully standalone **2.4 GHz Wi‑Fi and Bluetooth 5.2 module**, priced at just **$4**. This compact and affordable component brings turnkey wireless connectivity to RP2040/RP2350-based boards—without the hassle or cost of RF certification :contentReference[oaicite:2]{index=2}.
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## 🔌 Key Features
– **Same trusted silicon**: Utilizes the **Infineon CYW43439 combo chip**, previously used in Pico W and Pico 2 W :contentReference[oaicite:3]{index=3}.
– **Wi‑Fi 4 & Bluetooth 5.2**: Single-band 2.4 GHz 802.11n (up to 96 Mbps PHY) + Classic + BLE :contentReference[oaicite:4]{index=4}.
– **Pre‑certified**: Modular certification eliminates the need for developers to perform expensive individual device testing :contentReference[oaicite:5]{index=5}.
– **Compact & easy to integrate**: Castellated pads, shared internal antenna, and SPI host interface simplify PCB integration :contentReference[oaicite:6]{index=6}.
– **Low power draw**: Typical receive 43 mA; transmit ~271 mA at full power :contentReference[oaicite:7]{index=7}.
– **Tiny form factor**: Just 16.5 × 14.5 mm—perfect for space-constrained designs .
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