SONOFF SNZB‑04 Zigbee Wireless Door/Window Sensor – Battery Contact Sensor for Home Security, Works with Alexa & Google Home

【SONOFF SNZB-04P Zigbee Door/Window Sensor】

🔒 Tamper Alert Security - Instant notifications if sensor is removed
⚡ 5+ Year Battery Life - Ultra-low power consumption (CR2450 battery included)
📶 Zigbee 3.0 Connectivity - Strong signal with 100m max range

【Smart Home Integration】

🗣️ Voice Control - Works with Alexa & Google Home
🏠 Smart Scenes - Triggers lights/alarms when doors open
🤖 ZHA Compatible - Works with Zigbee Home Automation systems

【Premium Features】

🔔 Real-Time Alerts - Get instant phone notifications
🧲 Magnetic Design - Compact 38mm housing (pet-friendly)
🌧️ IP20 Rated - Basic splash resistance for indoor use

【Why Choose SNZB-04P?】

💰 No Hub Needed - Directly connects to compatible Zigbee hubs
🛠️ DIY Installation - 3M adhesive & screw mounting options
📦 Includes - Sensor + magnet, CR2450 battery, manual


  Scene Linkage, Start Your Smarter Life

Have you ever thought to turn on/off home appliance through you action? Simply connect the sensor with your home appliance and you can make devices on/off when you open or close the door.Just Like A Police Is Patrolling Your Home

Worry that your home is threatened when you’re away? Try to connect a camera to the sensor and you can scare the stranger off with your voice anywhere, anytime.

History Records Check

Want to check the past message notification of your home? The motion sensor allows you to go back to the history records over past 3 months.Intelligent Security, Simple Installation

Simply use our included 3M adhesives to get the motion sensor mounted in your ideal locations just in seconds.

Low-battery Notification

You will get a notification of low-battery level when the battery life gets 10% remaining.

SONOFF SNZB-04 Zigbee Smart Door Window Sensor Mini Door Alarm Sensor Work With SONOFF Zigbee Bridge For Smart Home Security

Note 1: SNZB04 must be used with Zigbee Bridge.

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 ZBBridge 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.