How It Works

1
Set up your Zigbee hub first
You need a Sonoff Zigbee Bridge Pro or NSPanel Pro on your eWeLink account.
2
Pair in eWeLink
Open eWeLink → your Zigbee hub → Add Device. Hold the button on the sensor until the LED pulses, then accept.
3
Peel and stick
Wipe the door and frame clean. Peel the adhesive, stick the bigger piece on the frame and the magnet on the door so they line up when closed.
4
Build automations
Create an "Away" scene: if any door opens while away → camera records + push alert + smart bulb red. One sensor unlocks a lot.
5.0 from 553 verified Google & Facebook reviews — real orders across Lebanon Read reviews

Is This Right for Me?

Protocol: Zigbee 3.0
Hub required: Sonoff Zigbee Bridge Pro or NSPanel Pro
Battery life: 5+ years (typical)
Tamper alert: Yes — separate notification if removed
Mounting: Peel-and-stick on door + frame
Works offline: Yes — Zigbee runs through the hub locally
App: eWeLink (via Zigbee hub)

Product Details

Sonoff Zigbee Door/Window Sensor (SNZB-04P)

A wireless sensor that detects when a door or window is opened or closed and instantly alerts you on your phone. It connects through a Zigbee (a wireless smart home protocol that connects devices through a hub) hub, so it works reliably even if your internet goes down. With a 5+ year battery, it’s a set-and-forget security device.

Key Features:

  • Instant Alerts: Get a phone notification the moment a door or window is opened.
  • 5+ Year Battery: Long-lasting battery — no frequent replacements.
  • Tamper-Proof Alert: If someone tries to remove the sensor, you’ll be notified.
  • Works Offline: Uses Zigbee, so local automations continue even without internet.
  • Smart Automations: Trigger lights, alarms, or cameras when a door/window opens.
  • Easy Installation: Peel-and-stick with adhesive — one piece on the door, one on the frame.

💡 Pro Tip: Place one on every exterior door and window. Set an automation: if any door or window opens while you’re away, you get an instant notification and the camera starts recording.

What You Get

Instant open/close alert
Phone notification the moment a door or window opens. Even if you're at work, at the village, or abroad.
5+ year battery
Zigbee + low-power design = years of monitoring on one battery. You'll forget it's there.
Tamper-proof
If someone tries to pry the sensor off, you get a separate tamper alert. Removal doesn't quietly defeat it.
Works offline
Zigbee runs locally — local automations ("if door opens, camera records") keep running even when internet is down.
60-second install
Peel both adhesive backings, stick one on the door, one on the frame. No drilling, no electrician.

Works With

Amazon Alexa
Works
Google Assistant
Works
eWeLink Scenes
Works
Sonoff cameras (auto-record on trigger)
Works
Home Assistant (via Zigbee2MQTT or ZHA)
Works

Control with the eWeLink app

eWeLink app icon
eWeLink
Set up your Sonoff Zigbee Wireless Door/Window Sensor SNZB-04P in minutes — voice control, scenes, automations, away mode.
App Store Google Play
View app

What's in the Box

1× Sonoff SNZB-04P door/window sensor (2 pieces — sensor + magnet)
2× Adhesive strips for mounting
1× CR2032 battery (pre-installed)
Quick start guide (Arabic + English)

Delivery & Pickup

Standard Delivery
All Lebanon governorates — Greater Beirut usually next day; Tripoli, Jbeil, Saida, Tyre, Zahle, Akkar and the rest within 2–4 working days.
4 $ · Free over 50 $
Express Delivery
Faster shipping — usually within 24 hours of order confirmation (Greater Beirut & Metn). Same-day not guaranteed.
6 $ flat
Pickup — Dekwaneh
Collect from our Dekwaneh store. Weekdays 10am–5pm, Sat 10am–1pm.
3 $ · Free over 30 $

Warranty & Support

6-month Local Warranty
Covers defects in materials & workmanship. Handled here in Lebanon.
WhatsApp Support — Always On
Can't set it up? Message us. We reply within minutes, not days.
14-day Exchange — Unopened Items
The item must be unopened and in its original packaging. Exchange it for a product of equal or higher value — we do not give cash refunds. Opened items are covered by the warranty if there is a factory defect.
Free Setup Help
Every order includes a setup guide — plus a free WhatsApp call if you ever need a hand.

Customer Reviews (1)

5.0
★★★★★
1 review
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Smartio customer
April 2026
★★★★★
✓ Verified Purchase

Frequently Asked Questions

Is the Zigbee Bridge Pro required? ›
Yes — this is a Zigbee sensor. It needs a compatible Zigbee hub to talk to. Use a Sonoff Zigbee Bridge Pro or an NSPanel Pro with built-in Zigbee.
Does it run on batteries? ›
Yes — CR2032 coin battery pre-installed. Lasts 5+ years thanks to Zigbee's low power draw.
Is it compatible with my existing setup? ›
Pairs to your eWeLink account through the Zigbee hub. From there you can route automations to Alexa, Google, and even Home Assistant if you use it.
How difficult is installation? ›
Peel-and-stick — about 60 seconds. One piece sticks on the door (or window), the other on the frame. Align them so they're close when the door is closed. No electrician needed.
Will it keep working during EDL outages? ›
Yes — Zigbee runs locally through the hub. As long as your hub has power (a small UPS or battery backs it up), the sensor keeps monitoring and local automations keep firing.
Is the manual in Arabic? ›
Yes — the quick start guide comes in both Arabic and English.
Can I trigger a camera or alarm when the door opens? ›
Yes — in eWeLink, create a scene: "If door sensor → open, then camera records / smart bulb turns red / alarm chimes". Combine with other Sonoff devices for layered automations.
How many can I put on one Zigbee hub? ›
Dozens. A Sonoff Zigbee Bridge Pro handles a full house of sensors. Add one to every door and window you care about — they all show up in one eWeLink dashboard.

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