The SONOFF SNZB-04P ZigBee Door and Window Sensor (+battery) is a smart device that allows you to quickly detect the opening or closing of doors and windows and immediately notify you via your chosen smart system. It is ideal for anyone who wants to make their home safer, smarter and more transparent without complicated cables or complex settings.

This sensor is the perfect choice for those who want a simple yet effective solution for access control or to increase the sense of security in their home. The device is compatible with the ZigBee platform, which means fast response, minimal power consumption and stable operation without interference with other wireless devices in the home.

The user experience is really simple – installation is possible almost anywhere, as it is battery-operated and does not require special installations. When someone opens a door or window, the sensor immediately triggers a notification via the bridge and app, giving a sense of control and peace of mind, even when you are not at home. If you use Google Home or another system, the sensor integrates easily and allows you to set up automations, for example, turning on the lights when the front door is opened.

Technical advantages include long battery life, reliable and immediate notifications, and a very discreet design that does not disrupt the appearance of the room. Since it does not use WiFi, it is also more resistant to network saturation and consumes even less energy. Upgrading your home to a smart living environment with this sensor is quick, affordable and easy, suitable even for those who are just starting out with automation.

User view

The SONOFF SNZB-04P ZigBee door and window sensor is a top choice for anyone who wants to easily monitor what is happening with their doors or windows at home or in the office. It is most commonly used by those who want a greater sense of security, as well as parents and pet owners who want to control the entrance to their “safe space”. SONOFF as a brand is known for its reliable smart devices that work seamlessly with various smart hubs – especially if you already have a ZigBee system.

The sensor is suitable for modern households where practicality is important - for example, when you want to be aware of whether the windows are closed before bad weather or check whether the children have actually closed the front door after coming home. Due to its minimalist design, you will quickly forget to notice it, and its operation remains discreet and reliable. It is especially useful for those who want a smart home solution without complicated settings or cables, as it works via ZigBee and without WiFi.

Why buy at Enaa

At Enaa, you can choose from proven smart products, as we regularly update our range with the latest models from trusted brands such as Sonoff. With professional support, we can quickly help you with questions about compatibility or choosing the right sensor for your home.

Answers to frequently asked questions

Does the SONOFF SNZB-04P sensor work without a central unit?

For the sensor to function properly, you need an appropriate ZigBee hub or "hub", as it does not connect directly to your phone or WiFi network on its own.

Is the sensor compatible with all smart devices?

The sensor is designed for ZigBee systems and works well with most recognized hubs or applications, such as Sonoff ZB Bridge and other ZigBee platforms, but please check compatibility with your smart home solution before use.

What is the battery life?

The included battery typically lasts for several months, depending on the frequency of use and the number of door or window detections triggered.

Is sensor installation difficult?

Installation is very easy: simply attach the sensor and magnetic unit to the chosen location near the door or window. Instructions and adhesive tape are included in the kit, so no tools or drilling are required.

Do I need an additional app for setup?

To set up the sensor, we recommend using an application that is compatible with your ZigBee control center (e.g. eWeLink or similar), where you can customize notifications and monitor the status remotely.

Description updated: October 2025