SONOFF SNZB-04P Zigbee Door Sensor – 2 Pack, 5yr Battery, Tamper

Smart Zigbee 3.0 door/window sensor designed for reliable home security and automation.

• 2‑piece pack – perfect for two entry points.
• 5‑year CR2477 battery life eliminates frequent replacements.
• Tamper‑proof design sends instant alerts if disturbed.
• Works with EWeLink, Alexa, Google Home when paired with any Zigbee hub (e.g., SONOFF ZB Bridge, Echo Plus).
• Local smart scenes keep automations running even if the internet drops.