Sonoff Zigbee Door/Window Sensor SNZB-04PR1

Smarter Door & Window Monitoring Without the Guesswork

Monitor doors and windows, receive instant alerts, and trigger smart home automations with the SONOFF SNZB-04PR1 Zigbee Door/Window Sensor.

✔ Zigbee 3.0 Wireless Connectivity
✔ Tamper Alert Protection
✔ 5+ Year CR2477 Battery Life*
✔ Up to 20mm Installation Distance
✔ Home Assistant, ZHA & Zigbee2MQTT Compatible

Built for smart homes, entry points, windows, and automated security routines.

Know When Something Changes

A standard door or window sensor only tells you when an opening changes state.

The SONOFF SNZB-04PR1 turns that simple detection into a useful part of your smart home. When a door or window opens, the sensor can trigger notifications, lights, alarms, cameras, or other connected devices through your compatible Zigbee ecosystem.

Its built-in tamper alert adds another layer of awareness by notifying you if the sensor is disturbed or removed from its installed position.

With Zigbee 3.0 connectivity, long battery life, and local smart scene support, it is designed for homeowners who want reliable door and window monitoring without unnecessary complexity.

Why Choose the SONOFF SNZB-04PR1?

Choosing a smart door sensor is about more than simply detecting an open or closed door.

The SNZB-04PR1 combines:

Zigbee 3.0 connectivity for integration with compatible smart home hubs

Tamper detection for additional security awareness

CR2477 battery providing over 5 years of theoretical battery life*

Local smart scenes for responsive Zigbee automation

Home Assistant compatibility through ZHA or Zigbee2MQTT

Flexible installation with up to 20mm between sensor and magnet

Every feature is designed to make smart home security and automation easier to manage.

Why SONOFF Compared to Basic Door Sensors

The Difference You Notice Immediately

Instant Door & Window Awareness

Know when a door or window changes from closed to open and use that event to trigger notifications or smart home actions.

Added Tamper Protection

Receive an app notification if the sensor is tampered with or removed from its installed position.

Long-Term Battery Performance

The CR2477 battery provides over 5 years of theoretical battery life under SONOFF's stated laboratory conditions, reducing the need for frequent battery replacement.*

Smarter Home Automation

Use the sensor as a trigger for lights, alarms, cameras, notifications, and other compatible smart home devices.

Reliable Local Automation

Compatible Zigbee devices can continue linked local scenes even when the internet connection is unavailable, provided the devices remain powered and connected to the Zigbee network.

Premium Features

How to Use the SONOFF SNZB-04PR1

Using the sensor is straightforward:

1. Install the required compatible Zigbee hub or gateway.

2. Remove the battery insulation sheet to power the sensor.

3. Add the sensor to your compatible Zigbee ecosystem.

4. Install the transmitter and magnet on the door or window.

5. Align the installation marks and keep the closed-door/window gap at 20mm or less.

6. Create your preferred notifications, scenes, or automations.

For eWeLink setups, compatible SONOFF gateways such as ZBBridge-P, NSPanel Pro, or iHost can be used. Home Assistant users can integrate the sensor through ZHA or Zigbee2MQTT with compatible Zigbee hardware.

Add the SONOFF SNZB-04PR1 to your smart home and turn everyday door and window activity into useful automation.

Who Is It For?

The SONOFF SNZB-04PR1 is ideal for:

Smart home owners

Home Assistant users

eWeLink users

ZHA and Zigbee2MQTT users

Homeowners wanting additional door and window monitoring

Families wanting automated lighting and security alerts

Smart home enthusiasts building custom automations

Property owners monitoring multiple entry points

If you want more control over what happens when a door or window opens, the SNZB-04PR1 provides a simple way to add intelligent detection to your existing Zigbee network.

Compatibility & Requirements

A compatible Zigbee hub or gateway is required.

The SNZB-04PR1 uses Zigbee 3.0 (IEEE 802.15.4) and can integrate with compatible Zigbee ecosystems.

Compatible platforms and gateways include:

• SONOFF ZBBridge / ZBBridge-P

• SONOFF NSPanel Pro

• SONOFF iHost

• SONOFF ZBDongle-P

• SONOFF ZBDongle-E

• Home Assistant with ZHA

• Home Assistant with Zigbee2MQTT

• Compatible Amazon Echo Zigbee hubs

Actual compatibility and available functions depend on the Zigbee gateway and platform being used.

Specifications

*SONOFF's official documentation identifies the product as SNZB-04P. The Dialedin listing uses SNZB-04PR1. Confirm the physical product/SKU with your supplier before publishing model-specific claims.

*The 5+ year battery figure is a theoretical value from SONOFF laboratory testing at 25°C, connected to a SONOFF gateway and triggered approximately 50 times per day. Actual battery life varies with usage and operating conditions.

Frequently Asked Questions

Does the SONOFF SNZB-04PR1 require a Zigbee hub?

Yes. A compatible Zigbee hub or gateway is required to connect and use the sensor within a smart home system.

Does it work with Home Assistant?

Yes. SONOFF states that the sensor can be added to Home Assistant through ZHA or Zigbee2MQTT using compatible Zigbee hardware such as a SONOFF ZBDongle.

How long does the battery last?

SONOFF specifies over 5 years of theoretical battery life using a CR2477 battery under its stated laboratory test conditions. Actual battery life depends on usage and environment.

What is the maximum installation distance?

The gap between the sensor and magnet should be 20mm or less when the door or window is closed.

Can it detect tampering?

Yes. The built-in tamper alert can notify you when the sensor is disturbed or tampered with through a compatible smart home setup.

Can it trigger smart home automations?

Yes. The sensor's open/close status can be used to trigger compatible scenes, including lighting, alarms, notifications, and other smart home actions.

Will automations work if the internet goes down?

Compatible Zigbee local scenes can continue operating without an internet connection as long as the Zigbee devices remain powered and connected to the Zigbee network.

Make Your Smart Home More Responsive

Whether you're monitoring an entry door, protecting windows, automating hallway lights, or building a Home Assistant Zigbee security system, the SONOFF SNZB-04PR1 Zigbee Door/Window Sensor gives you a practical way to turn everyday opening and closing activity into intelligent actions.

With Zigbee 3.0 connectivity, tamper detection, long theoretical battery life, flexible installation, and smart scene support, it delivers more than basic contact detection—it becomes a useful trigger within your wider smart home ecosystem.

Add smarter door and window monitoring to your Zigbee setup and take greater control of your home automation.