Sonoff Door Window Sensor WiFi

Product Introduction

The Sonoff DW2 WiFi Wireless Door/Window Sensor is a smart contact sensor designed to monitor the open or closed status of doors, windows, cabinets, and other entry points. Using built-in Wi-Fi connectivity, the sensor connects directly to the eWeLink smart home platform without requiring a separate hub or gateway.

When a door or window is opened or closed, the sensor instantly sends a notification to the mobile app, allowing homeowners to monitor their property remotely. The device can also trigger automation routines such as turning on lights, sending alerts, or activating other smart devices when activity is detected.

The sensor features a compact two-piece magnetic design consisting of a transmitter and a magnet that attach to the door or window frame. Its wireless battery-powered operation and adhesive installation make it quick and easy to install in homes, offices, or smart security systems.

Key Features

Real-Time Door and Window Monitoring
Detects when doors or windows are opened or closed and sends instant notifications to the smartphone app.

Direct WiFi Connectivity
Connects directly to a 2.4 GHz Wi-Fi network without requiring a separate hub or gateway.

Smart Alerts and Notifications
Receive alerts on your phone whenever a door or window is opened, helping improve home security.

Automation Scene Integration
Can trigger smart home scenes such as turning on lights or activating cameras when a door opens.

Battery Level Monitoring
Displays battery level in the app and sends low-battery notifications when replacement is needed.

Quick Adhesive Installation
Simple peel-and-stick installation makes it easy to mount on door frames or window sills.

Smart Home Integration

The Sonoff Door Window Sensor WiFi connects directly to the eWeLink smart home platform.

Once connected, it can integrate with other compatible smart devices to trigger automation scenes.

Common automation examples include:

• Sending alerts when doors or windows are opened
• Turning on lights when a door is opened
• Triggering cameras when entry points are accessed
• Monitoring door or window status remotely through the app

Technical Specifications

Product Type: WiFi Door and Window Contact Sensor
Model: DW2-WiFi
Connectivity: WiFi 2.4 GHz (IEEE 802.11 b/g/n)
Power Source: 2 × AAA batteries
Working Voltage: DC 3V
Standby Current: ≤ 40 µA
Installation Gap: < 5 mm
Material: PC V0 flame-retardant housing
Operating Temperature: −10 °C to 40 °C

What’s in the Box

Sonoff Door Window Sensor WiFi
Magnetic contact module
Adhesive mounting pads
User manual