SNZB-02D is a smart temperature and humidity sensor with LCD screen, allows you to see the real-time temperature and humidity on the screen and monitor the living conditions on the App, provides accurate measurements with ultra-high precision, ability to switch between ℃ and ℉, store and export historical data, get alarms and notifications, voice query, and set smart scenes to realize your home automation.【Large LCD Display】: Features a clear, easy-to-read LCD screen that dynamically shows real-time temperature and humidity. Intuitive icons also indicate room conditions and battery status at a glance.【High Accuracy & 5s Refresh Rate】: Equipped with a Swiss-made sensor for precise measurements: ±0.2°C / ±0.4°F temperature accuracy and ±2% RH humidity accuracy. Data updates every 5 seconds for timely insights.【Instant App Alerts】: Receive push notifications on your phone when temperature or humidity levels go beyond your preset comfort range.【Remote Real-Time Monitoring】: Monitor temperature and humidity in real time via the app or directly on the built-in display—remotely and reliably with coverage up to 120m/400ft (open space).【Smart Compatibility】: Compatible with for gateways 3.0, such as for SONOFF for Bridge Pro, for SONOFF for NSPanel Pro, and for SONOFF for ZBDongle-PE, as well as for Alexa with built-in hub, ensuring seamless integration and control.【Flexible Mounting Options】: The sensor supports three mounting methods - desktop, magnetic back, or glue, allowing you to easily place and monitor temperature and humidity levels in various locations of your home.