The Sonoff RF Bridge R2 converts 433MHz RF devices to Wi‑Fi and integrates with eWeLink and Alexa, and explicitly supports DW2‑RF door/window and PIR3‑RF motion sensors. Good choice for adding remote 433MHz sensors to a Wi‑Fi/eWeLink smart home, but note it is limited to 433MHz RF and depends on the eWeLink/Alexa cloud ecosystem.
For DIY smart‑home users who want to bring 433MHz door/window or PIR sensors onto Wi‑Fi and eWeLink/Alexa; avoid if you need multi‑band RF or guaranteed local‑only control.
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