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SONOFF SNZB-04 – ZigBee Wireless Door/Window Sensor

(19 customer reviews)

1108 in stock (can be backordered)

  • Remind you when the door/window is open and closed.
  • Sync the opening & closing status of door/window on APP.
  • Can make ZigBee 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.

820.00 3,000.00

1108 in stock (can be backordered)

Bulk Price
Quantity Fixed price
1 820.00
2 - 5 679.00
6 - 10 550.00
11 - 20 510.00
21 - 50 498.00
51 - 99 487.51
100 - 199 436.96
200 - 8500 401.83
7,748.00 for 3 item(s)


The wireless door/window sensor is essential for knowing who is coming in and out of your home, so it is most often used as part of smart security system.

SONOFF SNZB-04 is a ZigBee 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 ZigBee 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 ZigBee Bridge in harmony, 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.


Weight 0.040 kg




Specification of SONOFF SNZB-04

Battery: 3V(CR2450);
Wireless connection: Zigbee 3.0;
Material: PC;
Magnet Dimension: 32X15.6X13mm
Dimension Sensor: 47X27X13.5mm


Does this product checked before shipping them to me?

Yes., of course.We have a professional Quality Control team. They will check carefully for each item we received from factory to avoid sending defective goods to our customers.

If a item is found defective in our Technical QC  team , it will be returned to the factory. Please don’t worry about receiving a defective item because we are committed to being a trustworthy

Products Guaranteed

Factories that supply Sonoff are strictly evaluated by us, and we provide you an even better reassurance of consistent  high quality thanks to our Sonoff Technical QC team. We double-check the contents of all orders carefully before dispatch to our customers a. Sonoff will maintain all product serial number and products ID for stop delicacy.

Lead time

Processing time 1-2 business days normally: During this period, we do strict quality-control tests and get the items carefully packed.

Delivery time

Delivery time 3-8 business days normally in India.

 Who will be delivered the product to me

You order  will dispatch from your nearest local authorized dealer by ShipRocket/Delhivery.com.

What should I do if my items arrived damaged?

When using shipping services, we want the delivery to be as fast as possible. At the same time, we expect from the courier company to handle our shipments with great care throughout their journey. Packages reach several depots and go through multiple hands until the driver delivers them to their recipients. Even though we might assume it is the courier’s fault for the damaged delivery of the parcel, several other situations explain it is not always the case.

If you order got damaged or lost during transits so  Rarely, rough handling by the courier can lead to physical damage to your goods, e.g. broken screen. In this condition, Apply for Insurance claim terms & conditions applicable.

Bulk Order

Based on 19 reviews

5.0 overall

Add a review

  1. K***O

    Sonoff devices and hub and excellent value for money. All are easy to pair and use.


  2. T***J

    use it for home security! works very well!


  3. mu****sh

    Perfect product 👍


  4. rt****

    I love them,I am happy with the operation of it, they have the function to detect opening and closing and they can send you push notifications that you can even wear with your smart bracelet, it’s great


  5. hi****rt

    Very good value for money zigbee door sensor! I use is with Sonoff bridge flashed with Tasmota ZbBridge firmware and Node-Red


  6. ty****op

    Sonoff devices and hub and excellent value for money.all are easy to pair and use.


  7. kh****an

    great product, I recommend, fast delivery


  8. md****ay

    Good little sensor, fits easily on a door without really being noticeable. Product comes with adhesive to stick on.


  9. tr****se

    great! they work great and the battery was 100% charged. It was not easy to set them up but after a while I did it!


  10. ch****



  11. bh****qa

    The product works well.


  12. R***U

    Exactly as expected. Epic small size which is awesome. Quality is excellent. Will be getting more.


  13. rh****dr

    Great sensor,opening,.Arrived fast. Very good


  14. tr****du

    These items are extremely easy to set up with the ZB Bridge and are very reliable. Thank you.


  15. zh****iu

    Small and practical just bend a little the wires inside for better connection of the battery


  16. ui****lp

    Excellent cost benefit to those who are leaving their home automated.


  17. ze****ah

    very easy to install, I just had to squeeze a little bit where the tin stack goes that could work well.


  18. ju****ne

    goods arrived earlier than expected and in very good packaging. items also good quality and works 100%


  19. yr****re

    for this device you need the ewelink app but there is no direct connection. you need a bridge. i hope i have orderd the correct bridge.


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