Open box Window/door sensor Sonoff SNZB-04P, Zigbee, battery included

What does "open box" mean?

Open-box products are returned products with opened or damaged packaging, but fully checked from a technical point of view and completely functional. They come with the same warranty as new products.

Sonoff SNZB-04P – Zigbee 3.0 smart door/window sensor

Smart monitoring for security and automation in your home
The Sonoff SNZB-04P is a Zigbee door or window sensor designed to detect opening or closing and send real-time notifications via the eWeLink app. With a new design, extended battery life and an anti-tamper function, this sensor is a reliable and efficient solution for your home security.

Note: This product uses the Zigbee protocol and requires a compatible Zigbee hub/bridge (e.g. Sonoff ZBBridge-P / Sonoff ZBBridge-U / Sonoff ZBDongle-E / Sonoff Dongle-M) to be connected to the network and controlled from the app. It does not work on its own over WiFi.

Open/close notifications

Monitors doors and windows in real time: you get instant notifications in the app when they are opened or closed.

Smart automations

It can trigger other smart devices: switch on the lights when a door opens or activate an alarm in the event of unauthorised access.

Anti-tamper protection

Equipped with a tamper detection function – if someone tries to remove it, you get a notification on your phone straight away.

Battery life of up to 5 years

It runs on a CR2477 battery (included), providing an exceptional battery life of up to 5 years.

Local scenes without internet

Zigbee scenes can be triggered locally even without a Wi-Fi connection, as long as the devices are powered and connected to each other.

Extended compatibility

Integrates with most Zigbee 3.0 hubs:
Sonoff NSPanel Pro
Sonoff ZB Bridge Pro
Sonoff ZBDongle-E / ZBDongle-P
Sonoff iHost
Amazon Echo Plus (2nd gen)

Technical specifications

• Model: SNZB-04P

• Sensor type: magnetic contact for door/window

• Wireless protocol: Zigbee 3.0

• Anti-tamper alert:

• Battery: 1 x CR2477 (included)

• Battery life: up to 5 years

• Maximum distance between sensor and magnet: 20 mm

• Local (offline) operation: Yes

• Compatibility: Sonoff, SmartWise, Amazon Echo Plus, etc.

• Material: ABS

• Mounting: with adhesive tape or screws

• Certifications: CE, FCC, RoHS

The Sonoff SNZB-04P is the ideal solution for smart automations and secure monitoring of the doors and windows in your home!

Practical use cases

• Mounted on the front door, it sends an instant notification to your phone if the door is opened while you are away from home.
• Used on the bedroom window to automatically switch off the air conditioning or the boiler when the window is open, saving energy.
• Integrated into an automation that automatically switches on the hallway light when the front door is opened in the evening.

Technical specifications: