GreenBlue Wireless Reed Switch / WiFi Door/Window Sensor, Android/iOS, 3.0V DC, LR03x2, GB479 B

WIRELESS DOOR AND WINDOW OPENING SENSOR – CONTROL AND PEACE OF MIND EVERY DAY
The GreenBlue GB479 wireless door and window sensor is a practical solution for those who want better control over their home without the hassle. Once installed, it notifies you when doors or windows are opened or closed, making it easier to ensure the security of your apartment, home, or office, and to quickly check if everything is locked—even when you’re away from home.
TUYA AND SMART LIFE (ANDROID / IOS) – STATUS, NOTIFICATIONS, AND OPENING TIME IN ONE APP
The device works with the Tuya and Smart Life apps on Android and iOS, making it convenient and intuitive to use. On your phone, you can see the current status of the door or window and enable notifications to help you respond when it matters. Additionally, the sensor allows you to track the open or closed duration within the app, making it easier to monitor how long a door or window remains in a given state. This solution works well both for everyday use and when you want to monitor your home remotely.

AMAZON ALEXA AND GOOGLE HOME – CONVENIENCE AT YOUR FINGERTIPS
The GB479 sensor is compatible with Amazon Alexa and Google Home, allowing you to enable voice control and use the device as part of a larger smart home system. This lets you quickly check if the door is locked or incorporate the sensor into your home routines without constantly reaching for your phone.
SMART SCENARIOS – A HOME THAT RESPONDS JUST THE WAY YOU WANT
In the TUYA and Smart Life apps, you can create smart scenarios with other devices so that the sensor does more than just "report" when a door is opened. In practice, this means that a single simple event, like a door opening, can trigger a scheduled action in your home. This is a very convenient solution because you can tailor automations to your habits and the time of day, and everything runs in the background—discreetly but effectively.

- Manufacturer: GreenBlue
- Model: GB479 B
- Color: black
- Material: plastic
- Power supply: 2x 1.5 V AAA batteries (not included)
- Standby current: ≤20 μA
- Alarm current: ≤80 mA
- Low voltage: ≤2.4 V
- WiFi standard: 2.4 GHz 802.11b/g/n
- Magnetic control distance: ≥15 mm
- Operating temperature: -10°C to +55°C
- Operating humidity: 10%RH–99%RH
- Compatible apps: Tuya, Smart Life (Android / iOS)
- Voice control: Amazon Alexa and Google Home
- Operation indicator: blue LED
- Installation: double-sided tape (included)
- Transmitter dimensions: 47 x 16 x 11 mm
- Receiver dimensions: 72 x 21 x 25 mm
- Applications: doors, windows, cabinets (depending on installation)
- App features: status overview, event history, automations/scenes, notifications

- GreenBlue GB479 B Wireless Reed Switch / WiFi Door/Window Sensor
- Double-sided tape
- User manual
- Manufacturer's packaging

- Detection of door and window opening and closing
- Status preview in the app – quick information on whether a specific door or window is currently open or closed
- Event notifications on your phone – useful when you want to know if someone has opened a door, window, or, for example, a cabinet
- Compatibility with Tuya and Smart Life – a popular smart home ecosystem, allowing you to easily add and manage devices in one place (Android / iOS)
- Integration with Amazon Alexa and Google Home – the sensor can function as part of your smart home and routines
- Automations and scenes in Tuya/Smart Life – ability to set other devices to react to opening/closing
- More control away from home – a convenient solution when you’re at work, away, or want to keep an eye on your loved ones’ homes
- Discreet design – a small device that doesn’t stand out and doesn’t disrupt the interior’s aesthetics
- Wireless installation – no need to drill into walls or run wires; simply stick it on using the included double-sided tape
- Help with daily organization – practical for monitoring children (when they come home), elderly family members, in an office, or in a small business (monitoring door openings during specific hours)
- Color: black