DW2WiFi - Door/window sensor Sonoff - Free user manual and instructions

Product type	Wireless WiFi door/window sensor
Brand	Sonoff
Model	DW2WiFi
Dimensions (transmitter)	70 x 31 x 19 mm
Dimensions (magnet)	42 x 14 x 16 mm
Weight	Less than 1 kg
Power supply	2 AAA 1.5 V batteries (not included)
Operating voltage	DC 3 V (2 x 1.5 V)
Standby current	≤ 40 µA
Transmission current	≤ 15 mA
Connectivity	Wi-Fi IEEE 802.11 b, 2.4 GHz
Compatible operating systems	Android & iOS
Required app	eWeLink
Detection distance	Gap > 20 mm between magnet and transmitter triggers alarm
Installation gap	Less than 5 mm between magnet and transmitter
Operating temperature	-10°C to 40°C
Housing material	PC (polycarbonate)
Recommended installation height	Less than 2 m
Main functions	Push alarm notification, operation history, battery indicator, shared control
LED indicator	Slow blink: pairing mode; fast blink 1x: router failure; 2x: server failure
Installation	3M adhesive mounting (remove protective film)
Maintenance and cleaning	Clean with a dry cloth; replace batteries when low
Safety	Do not install outdoors, near wiring or magnetic objects

Frequently Asked Questions - DW2WiFi Sonoff

How to pair the sensor with the eWeLink app?

Press and hold the pairing button on the transmitter for 5 seconds with the eject pin until the LED blinks. Open the eWeLink app, tap '+', select 'Bluetooth Connection' and follow the instructions.

Which batteries to use?

Use two AAA 1.5 V batteries. Batteries are not included, buy them separately.

What to do if the sensor does not connect to Wi-Fi?

Check that your router is on 2.4 GHz. Ensure the sensor is in pairing mode (blinking LED). If the LED blinks fast once, it indicates a router connection failure. Reset the sensor by removing the batteries and try again.

What is the detection range?

The sensor triggers an alarm when the magnet moves more than 20 mm away from the transmitter. The installation gap between magnet and transmitter must be less than 5 mm when the door/window is closed.

Can the sensor be used with multiple phones?

Yes, you can share the device with family members via the eWeLink app. They will also receive alarm notifications.

How to replace the batteries?

Remove the back cover of the transmitter, replace the old batteries with new AAA batteries respecting polarity, then close the cover.

Where to install the sensor?

Install it on the door or window frame indoors, at a height less than 2 m. Align the alignment marks of the magnet and transmitter. Do not install outdoors or near magnetic objects.

What does a fast blink twice of the LED mean?

A fast blink twice indicates a server connection failure. Check your internet connection and the eWeLink server status.

Is the sensor waterproof?

No, the sensor is not waterproof. Do not install it in a place exposed to rain or humidity.

How to check the battery level?

Open the eWeLink app and go to the sensor settings. The battery level is displayed in the interface. If the battery is low, the app will send you a notification.

USER MANUAL DW2WiFi Sonoff

Two rectangular shapes with arrow indicators, no text or symbols present

Wi-Fi Wireless Door/Window Sensor

· 中文 ---- 1-5

• Deutsch ---- - 11-15

Diagram of a mechanical component with a blue arrow indicating direction (no text or symbols)

2- 2. 根据正负极标识，装上电池

Top-down schematic of a room layout with central furniture and floor indicators (no text or labels)

Pure electrical circuit lines without any symbols

2-3. 合上后盖

电池需另行购买。

3. 进入配网模式

Simple diagram showing a vertical panel with two connected components, one emitting light (no text or symbols)

Two 3D mechanical parts with blue rotation arrows indicating movement (no text or symbols)

graph TD
    A["•"] --> B["△"]
    B --> C["◀"]

1. 分别粘贴在所需开合区域。

<5mm

Illustration of a hand holding a doorbell next to a door panel, with no visible text or symbols.

窗户

注意事项：

请勿安装在户外容易被破坏的位置；

请勿安装在基础不牢固或有雨淋的位置；

请勿安装在线路旁或磁性物体附近；

更换电池

Diagram showing a device with an arrow indicating direction and a close-up of its internal structure, likely illustrating a process or assembly.

Operation instruction

1. Download the "eWeLink"APP

eWeLink Download on the App Store GET IT ON Google Play

e eWeLink

Android™ & iOS

2. Install batteries

2-1. Remove the back cover of the transmitter.

Diagram of a mechanical component with a blue arrow indicating direction (no text or symbols)

2-2. Insert batteries into the battery compartment based on identifiers of positive and negative poles.

Diagram showing two layout views of a room with furniture and battery cells, no text or symbols present

2-3. Close the back cover.

The battery is not included, please purchase it separately.

3. Enter pairing mode

Simple diagram showing a vertical panel with two connected components, one emitting light and the other holding a rounded rectangle (no text or symbols)

Long press the pairing button on the transmitter for 5s with the eject pin until the LED indicator flashes, then the device enters the pairing mode.

4. Add the device

Bluetooth Pairing Ava ila ble for b lueto oth conne ction :

Tap "+" and select "Bluetooth connect", then operate following the prompt on the APP.

Install the device

1. Tear off the protective film of the 3M adhesive.

Two 3D mechanical parts with blue rotation arrows indicating motion (no text or symbols)

1. Try to align the mark line on the magnet with that on the transmitter during installation.

graph TD
    A["•"] --> B["△"]
    B --> C["◀"]

1. Install them in the opening and closing area separately.

<5mm

Make sure the installation gap is less than 5mm when the door or the window is closed.

Specifications

Model	DW2-Wi-Fi
Battery model	AAA 1.5V
Working voltage	DC3V (2 x 1.5V battery)
Quiescent current	≤40uA
Emission current	≤15mA
Wi-Fi	IEEE 802.11 b 2.4GHz
Operating systems	Android & iOS
Installation gap	<5mm
Working temperature	-10°C~40°C
Material	PC
Dimension	Transmitter: 70x31x19mm Magnet: 42x14x16mm

Product Introduction

LED indicator Align the mark lines Magnet Pairing button Transmitter

The device weight is less than 1 kg.

The installation height of less than 2 m is recommended.

LED indicator status instruction

Flashes	Bluetooth Pairing Mode
Flashes quickly once	Unable to discover the router
Flashes quickly twice	Connect to the router but fail to connect to Wi-Fi

Features

DW2-Wi-Fi is a Wi-Fi wireless door/window transmitter which triggers the transmitter by separating the magnet for more than 20mm from the transmitter, then the transmitter will send an alarm message and pushes it to APP. You can share the device with your family to check the door/window status together.

Share Control

Alarm push notification

Battery level

Application

Door Window

Note:

• Do not install outside the door/window.
• Do not install in the unstable position or in the place exposed to rain or moisture.
• Do not install near wiring or magnetic object.

Replace batteries

Diagram showing a device with an arrow indicating direction and a close-up of its internal components being handled by hands.

Betriebsanweisung

Diagram of a mechanical component with a blue arrow indicating direction (no text or symbols)

Diagram showing two views of a room layout with labeled compartments and battery cells (no text or symbols)

Simple diagram showing a vertical panel with two connected components, one emitting light (no text or symbols)

Two 3D mechanical parts with blue rotation arrows indicating movement (no text or symbols)

graph TD
    A["•"] --> B["△"]
    B --> C["◀"]

Diagram showing a device with an arrow indicating direction and a close-up of its internal structure, likely illustrating a process or assembly.

Diagram of a mechanical component with a blue arrow indicating direction (no text or symbols)

Diagram showing two layout views of a device with labeled components and an arrow indicating transformation (no text or symbols present)

2-3. Cierre la tapa trasera.

Simple diagram showing a vertical panel with two connected components, one emitting light and the other holding a rounded rectangle (no text or symbols)

Two 3D mechanical components with blue rotation arrows indicating motion (no text or symbols)

graph TD
    A["•"] --> B["•"]
    B --> C["•"]

Diagram showing a device with an arrow indicating direction and a close-up of its internal components, likely illustrating a process or assembly.

Diagram of a mechanical component with a blue arrow indicating direction (no text or symbols)

Diagram showing two layout views of a device with labeled components and an arrow indicating transformation (no text or symbols present)

Simple diagram showing a vertical panel with two connected elements, one emitting light and the other holding a rounded rectangle (no text or symbols)

Two 3D mechanical parts with blue rotation arrows indicating motion (no text or symbols)

Diagram showing a device with an arrow indicating direction and a close-up of its internal component being held by hands.

Diagram of a mechanical component with a blue arrow indicating direction (no text or symbols)

Diagram showing two layout views of a device with labeled components and directional arrow (no text or symbols)

Simple diagram showing a vertical panel with two connected components, one emitting light and the other holding a rounded rectangle (no text or symbols)

Two 3D mechanical components with blue rotation arrows indicating motion (no text or symbols)

graph TD
    A["•"] --> B["△"]
    B --> C["◀"]

Diagram showing a device with an arrow indicating direction and a close-up of its internal components being held by hands.

Diagram of a mechanical component with a blue arrow indicating direction (no text or symbols)

Diagram showing two layout views of a device with labeled components and directional arrow (no text or symbols)

Simple diagram showing a vertical panel with two connected components, one emitting light and the other with an oval shape (no text or symbols)

Two 3D mechanical components with blue rotation arrows indicating motion (no text or symbols)

Diagram showing a device with an arrow indicating direction and a close-up of its internal components being handled by hands.

FCC Warning

Changes or modifications not expressly approved by the party responsible for compliance could avoid the user's authority to operate the equipment.

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

FCC Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance20cm between the radiator & your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

Note:

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

— Reorient or relocate the receiving antenna.
— Increase the separation between the equipment and receiver.
— Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
— Consult the dealer or an experienced radio/TV technician for help.

Hereby, Shenzhen Sonoff Technologies Co., Ltd. declares that the radio equipment type DW2-Wi-Fi is in compliance with Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address:

https://sonoff.tech/usermanuals

TX Frequency:

WiFi: 2412-2472MHz

RX Frequency:

WiFi: 2412-2472MHz

BLE Frequency:2402-2480MHz

WiFi Output Power: 12.62dBm(802.11b)

BLE Output Power: 1.9dBm/MHZ

SonoFF

Shenzhen Sonoff Technologies Co., Ltd.

1001, BLDG8, Lianhua Industrial Park, shenzhen, GD, China

ZIP code: 518000

Website: sonoff.tech