Door sensor | window Sensor | smart sensor | SONOFF SNZB-04-ZB Wireless Door/Window Sensor Enable Smart Linkage Between SONOFF ZBBridge & WiFi Devices via eWeLink APP SNZB-04P(Upgraded)
About product :
The wireless door/window sensor is essential for knowing who is coming and out of your home, so it is most 0ften used as part of smart security system.Window Sensor / door sensor
SONOFF SNZB-04 is a ZB two-in-one wireless door/window sensor that can be put on your door or window to tell you with an alert notification if your door or window is opened or closed, adding an extra layer of security to your home. The sensor provides you the possibility to create a scene linkage of ZB and Wi-Fi devices. Both the opening and closing status of the door/window are synced on your mobile phone, no longer to think back whether the door/down is off or not. It is really useful and can help you turn on or off the light in the action. Works with SONOFF ZBBridge, you can set a scene to get your hallway lighted immediately when the door is opened. The camera function can be enabled on the sensor page in the eWeLink APP, which also allows you to view clearly who enters your home; even you can frighten the stranger and ask him to leave your home immediately with the two-way audio function. Its application can also extend to wide areas like drawers, garage doors, blinds, etc. Just stick it anywhere two things connect and it is always safe even if you don’t keep watch on it. Share the sensor with your family to give them an ability to quickly control and monitor your home together. Simple installation for easier setup. Peel and directly stick it on the targeted place or object, a smart security system is ready for you.
Window Sensor / door sensor
Feature :
- Remind you when the door/window is open and closed.
- Sync the opening & closing status of door/window on APP.
- Can make ZB and Wi-Fi devices keep linkage.
- Control the light with an action.
- Support adding the SONOFF camera to view what happened at your home.
- Share control makes other users control the connected device quickly.
- 3-month history records check .
- Low-battery notification.
- Simple peel and stick installation.
Window Sensor / door sensor
Specification of SONOFF SNZB-04-ZB :
Battery : 3V(CR2450)
Wireless connection : Zigbee3.0
Material : PC
Dimension :
Magnet : 32X15.6X13mm
Sensor : 47X27X13.5mm
Window Sensor / door sensor
Specification of SONOFF SNZB-04P(Upgraded) :
Wireless Connection : Zigbee3.0
Installation Distance : ≤20mm
Battery Model: CR2477 (3V)
Working Temperature : -10°C ~ 60°C
Working Humidity : 5-95%RH, non-condensing
Casing Material: PC (Polycarbonate)
Net Weight : 33g
Product Dimension : Transmitter – 50.5x32x21.9mm, Magnet – 27x12x12.4mm
Download Center :
SONOFF SNZB-04P User Manual
SONOFF SNZB-04P Quick Installation Guide
Package included :
1 x Wireless Door/Window Sensor
Price :
US$6.99For purchase and more information
Window Sensor / door sensor
FAQs of this product ( Door ensor / Window Sensor ) :
1. What is the SONOFF SNZB-04-ZB Wireless Door/Window Sensor?
SONOFF SNZB-04-ZB is a Zigbee wireless smart sensor that monitors if a door or window is open or closed and provides instant alerts to your smartphone via the eWeLink app.
2. How does this sensor improve home security?
The sensor will also alert you if a door or window was left open and you can monitor home entry. You can also pair it with SONOFF cameras so you can see who is entering and have two-way audio for extra security.
3. Does SONOFF SNZB-04-ZB support Wi-Fi devices?
Yes, by its implementation in SONOFF ZBBridge, you can customize automation scenes for bridging Wi-Fi and Zigbee devices, e.g., lighting up bulbs when opening doors.
4. SNZB-04-ZB and SNZB-04P differences what are they?
SNZB-04P (Improve) employs a more advanced, more rugged battery (CR2477).
SNZB-04P has a new generation with improved ruggedness and ≤20mm installation distance.
Both have Zigbee 3.0 for ensured stable and fast connections.
5. Do you require the services of a Zigbee hub to utilize this sensor?
You would indeed require the services of a Zigbee hub (SONOFF ZBBridge) to link the sensor to the eWeLink app in order to remotely access and monitor it, and control.
6. Are you able to use this sensor on doors and windows?
Yes, it can be installed on doors, windows, cabinets, drawers, garage doors, and blinds to monitor their open and close activities.
7. How do you notify me when the window or door is opened?
After pairing with the eWeLink app, you will get instant notifications when the sensor is triggered.
8. Does SONOFF SNZB-04-ZB have voice control support?
No, but you can use it in automation scenes with Alexa or Google Assistant using the help of the SONOFF ZBBridge.
9. How do I install the sensor?
Peel-and-stick installation. Just stick the sensor and magnet to the door frame or window (max distance ≤20mm for SNZB-04P).
10. Can I give control to my family members?
Yes, you can share control through the eWeLink app, and other users can view the sensor status.
11. How long is the battery life?
SNZB-04-ZB uses a CR2450 battery.
SNZB-04P (Upgraded) uses a long-life CR2477 battery.
Low battery reminders are given through the app.
12. Can it be used to control other smart devices?
It can be used to perform operations like turning on the light while doors are opened, thereby making it home automation-compatible.
13. Does it give history logs?
Yes, the eWeLink app retains a 3-month history of sensor activity.
14. What is the operating temperature and humidity range?
Temperature: -10°C to 60°C
Humidity: 5-95% RH (non-condensing)
15. What does the package contain?
1 x Wireless Door/Window Sensor (SNZB-04-ZB or SNZB-04P)
Installation adhesive
User manual













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