Real-time monitoring: The SNZB-02D sensor will monitor temperature and humidity in real time on the remote APP or display screen, with a coverage of up to 120 m/400 ft.

High accuracy and 5-second fast refresh: Built-in smart hygrometer sensor gives you more accurate readings, maintaining ±0.2 °C/±0.4 °F accuracy for temperature and ±2% accuracy for humidity, refreshing readings every 5 seconds.

Large LCD display: use the large LCD display to clearly and dynamically view real-time temperature and humidity values, while intuitive icons on the display make it easier than ever to check room conditions and battery status.

App notifications: receive instant alerts on your phone when the temperature or humidity exceeds the set comfort level.
Data storage and export: up to six months of free cloud storage and accurate enough to view hourly data, you can also check the highest and lowest values at any hour or day, and export the data as files.

OTHER FEATURES

• Zigbee standard compatibility: supports Zigbee gateways that use the Zigbee3.0 protocol, compatible with most nodes.
• Add to Home Assistant: Add SONOFF devices to Home Assistant for your home automation via the eWeLink add-on.
• Work with Alexa and Google Home: Just ask Alexa or Google Home and you’ll find out the temperature or humidity.
• Three installation options: stand, magnetic back, 3M adhesive

Technical details:

• Power supply: 3V
• Wireless connectivity: Zigbee 3.0
• Works with: Amazon Alexa, Google Assistant, IFTTT
• Certified compliance: CE, FCC
• Operating humidity: 5% – 95% RH non-condensing
• Housing material: PC V0
• Dimensions: 59.5 x 62.5 x 18.5 mm
• Power supply: 3V (CR2450 – included)

Manufacturer’s website