Sonoff DW2 Wi-Fi Wireless Door Window Sensor - 2.4GHz, Peel & Stick, AAA Battery
SKU: SENS-3319
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Sonoff DW2 Wi-Fi Wireless Door Window Sensor - 2.4GHz, Peel & Stick, AAA Battery

₹829.00 (Inclusive of all taxes)
Out of Stock

The Sonoff DW2 is a low-power Wi-Fi wireless door/window sensor designed for smart home and IoT security applications. It operates on 2.4GHz Wi-Fi (IEEE 802.11 b) and integrates seamlessly with the eWeLink ecosystem for real-time status monitoring and automation triggers without a separate gateway.

Features

  • Ultra-Low Power Wi-Fi: Features ≤40µA quiescent current and ≤15mA emission current for extended battery life, powered by two AAA batteries.
  • Direct 2.4GHz Wi-Fi Connectivity: Connects directly to your home network without a dedicated gateway, enabling remote monitoring and smart scene automation.
  • Real-Time Status & Alerts: Provides instant smartphone notifications and real-time opening/closing status via the eWeLink app, with history logging.
  • Magnetic Reed Switch Operation: Reliable contact detection with an installation gap of less than 5mm between sensor and magnet.
  • Integrated Battery Management: App displays real-time battery level and sends low-battery reminders for proactive maintenance.

Out of stock

Description

The Sonoff DW2 Wi-Fi Wireless Door Window Sensor is a compact, self-contained security module consisting of a main sensor unit and a separate magnet. It utilizes a magnetic reed switch principle: when the door or window opens, breaking the magnetic field, the internal switch changes state, triggering a wireless signal transmission. This event is communicated via low-power 2.4GHz Wi-Fi directly to your router, eliminating the need for a Zigbee or Z-Wave hub.

Engineered for reliability in residential environments, it operates within a 10°C to 40°C temperature range. Its primary function is to provide a digital input for home automation systems, enabling scenes such as turning on lights upon entry or triggering security alarms. The peel-and-stick adhesive backing allows for quick, tool-free installation on doors, windows, or cabinets, making it ideal for DIY smart home setups and basic intrusion detection.

Key Features

  • Gateway-Free Wi-Fi Operation: Direct 2.4GHz IEEE 802.11 b connectivity simplifies network integration and reduces system complexity.
  • Optimized Power Management: Ultra-low quiescent current (≤40µA) and efficient transmission bursts (≤15mA) maximize battery life, typically lasting up to 3 months with moderate use.
  • Real-Time Monitoring & Alerts: Delivers instant push notifications to your smartphone and allows continuous status checking via the eWeLink application.
  • Durable Magnetic Contact Sensor: Features a reliable reed switch with a precise <5mm activation gap for consistent door and window state detection.
  • Smart Ecosystem Integration: Creates automation routines by linking with other Sonoff smart devices (lights, plugs, cameras) within the eWeLink app.
  • User-Friendly Installation: Includes strong adhesive backing for quick, screw-free mounting on most surfaces.
  • Shared Access & History Logging: Supports multi-user sharing for family monitoring and maintains an event history log within the app.

Applications

  • Residential Security & Intrusion Detection: Monitor doors and windows for unauthorized entry, triggering immediate smartphone alerts.
  • Smart Home Automation: Automate lighting, HVAC, or audio systems to activate upon door opening for convenience and energy savings.
  • Asset & Cabinet Monitoring: Secure valuable items in cabinets, safes, or display cases with tamper alerts.
  • Elderly or Child Safety: Receive notifications when specific doors (e.g., medicine cabinets, exterior doors) are accessed.
  • IoT Data Logging: Track usage patterns of doors and windows for occupancy analysis or energy management in smart buildings.

Technical Specifications

Item TypeDoor/Window Sensor
BrandSonoff
Working VoltageDC 3V (2 x AAA 1.5V batteries)
Quiescent Current≤40µA
Emission Current≤15mA
Wireless ProtocolWi-Fi (IEEE 802.11 b 2.4GHz)
Installation Gap<5mm
Operating Temperature10°C to 40°C
Dimensions (Shipping)7 x 5 x 2 cm
Weight (Shipping)0.036 kg

Frequently Asked Questions

Does the Sonoff DW2 require a separate hub or gateway to work?

No, the DW2 connects directly to your 2.4GHz Wi-Fi network using the IEEE 802.11 b standard, eliminating the need for a Zigbee or Z-Wave hub. It communicates directly with your router and is managed through the eWeLink app on your smartphone.

What is the expected battery life, and how is it monitored?

Battery life depends on usage but can last approximately 3 months with an average of three door/window events per day. The eWeLink app displays the real-time battery level percentage and will send a push notification when the battery is low, reminding you to replace the two AAA batteries.

What is the maximum installation gap between the sensor and the magnet?

The magnetic reed switch requires the sensor and magnet to be aligned within a gap of less than 5mm (0.2 inches) for reliable operation. Exceeding this gap may cause the sensor to fail to detect the open/closed state correctly.

Can I use this sensor to trigger other smart devices automatically?

Yes. Within the eWeLink app, you can create automation scenes ("Smart Scenes") where the DW2's open/closed status acts as a trigger. For example, you can set it to turn on Sonoff smart lights or plugs when the door opens, or activate a linked IP camera to start recording.

Package Includes

  • 1 x Sonoff DW2 Wi-Fi Wireless Door Window Sensor (Sensor Unit & Magnet)

Additional Information

Weight 0.036 kg
Dimensions 5 × 7 × 2 cm

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