Sonoff - Zigbee opening/closing sensor

Description

Visit Sonoff SNZB-04P is an opening/closing sensor for doors or windows using the Zigbee 3.0designed for simple, reliable integration into existing systems home automation with Raspberry Pi.

Enhanced detection and safety

This sensor consists of a magnet and a sensor body, which communicate via a magnetic field. When the magnet separates from the main module (e.g. when a door is opened), the event is transmitted immediately. The SNZB-04P also features an integrated anti-theft (tamper)The system is equipped with a "tamper-proof" alarm system, which provides an instant alert in the event of tampering with the device or unauthorized access.

Remarkable autonomy

The sensor is powered by a battery CR2477 included, guaranteeing over 5 years depending on use. Thanks to its low standby power consumption and optimized Zigbee protocol, it requires very little maintenance.

Easy installation and discreet design

• Compact dimensions: approx. 50.5 × 32 × 21.9 mm for the main module, and 27 × 12 × 12.4 mm for the magnet.
• Screwless installation thanks to 3M adhesive tape simple, fast and non-invasive.
• Maximum detection distance between the two elements : ≤ 20 mmsuitable for most conventional windows and doors.

Zigbee compatibility and operating locality

Operating under Zigbee 3.0This sensor integrates perfectly with standard Zigbee gateways (USB dongle on Raspberry Pi), and is fully usable with tools such as Home Assistant or Zigbee2MQTT. It also supports local scenesThis allows scenarios to activate devices even in the event of a network failure, with a high level of responsiveness.

Key technical specifications

• Operating temperature : -10 °C to +60 °C
• Operating humidity 5 % to 95 % (non-condensing)
• Weight approx. 33 g
• Material Sturdy, lightweight polycarbonate housing

Concrete applications with Raspberry Pi (Home Assistant / Node-RED)

• Intelligent safety : receive immediate notification when a door opens unexpectedly.
• Contextual automations These include turning on lights at entrances, activating cameras, simulating a presence, and switching off lights at closing time.
• Home management The system can be used to: switch off sockets in the event of absence detected by opening/closing, trigger an audible or visual alarm.
• Usage history Log openings on a dashboard to analyze habits or optimize energy consumption.

Conclusion

Visit Sonoff SNZB-04P is a simple-to-install, yet feature-rich opening/closing sensor. Thanks to its Zigbee compatibility, seamless integration with a Raspberry Pi, long battery life and anti-theft functions, it's a robust and practical way to enhance the security and automation of your connected home.