Before you buy the **Sonoff (Itead) DW2RF**, check what's inside.

The Sonoff DW2RF is a battery-powered wireless door/window sensor that communicates via RF 433MHz, not WiFi. It is designed to work with Sonoff RF bridges and the eWeLink app for remote notifications when a door or window is opened or closed.

> ⚠️ **NOTE:** Ensure correct battery polarity when replacing the CR2450 battery.

## Quick Specs

- **Manufacturer:** Sonoff (Itead)
- **Model:** DW2RF
- **Protocol:** RF 433MHz
- **Chipset:** ESP/CK Chip
- **Ecosystem:** Sonoff
- **App:** eWeLink

## 🔧 Geek Corner (Flashing Info)

- **Chipset:** ESP8266
- **Flashable:** ❌ No
- **Info:** The DW2RF is an RF-only sensor and does not contain a microcontroller that can be flashed with custom firmware like Tasmota. It relies on a proprietary RF protocol.

## User Manual

Scanned pages from the official user manual:

## External Photos

Photos of the device exterior:

## Internal Photos

Teardown photos showing the PCB and components:

## Verdict

The **DW2RF** is a **WiFi** device from the **Sonoff** ecosystem.