• Works without gateway connection as it is Wi-Fi protocol
• The product uses 3 AAA batteries (not included)
• Instantly view the status of your home on the app.
• The sensor will send you a push notification immediately if someone is detected to open your door or window.
• Add a SONOFF camera or an unused smartphone, and you can see what’s going on in your home not just receive the alert notification when the door is opened.
• Installs in any corner of your home and automatically saves message notifications.
• Create smart scenes so one SONOFF device can trigger or deactivate another, or group multiple devices into a single group and turn them on at once with a single tap.

It is compatible with Amazon Alexa (Amazon Echo/Echo Dot/Amazon Tap) and Google Home Assistant. Allows you to use your voice to control home appliances for a hands-free experience.

1. Please turn off the power before installing the device.

2. The router must be 2.4GHz (Wi-Fi 5.0GHz is not supported), but there is no limitation on the smartphone network (2G/3G/4G/Wi-Fi networks are accepted).

TÜV, CE and FCC certifications ensure a safer and more reliable product.