The SONOFF SNZB-02D is a Zigbee temperature and humidity sensor with 2.5 inch LCD display. Large bold numbers are clear and the device works with Zigbee 3.0 gateways such as SONOFF Zigbee Bridge Pro, SONOFF NSPanel Pro, SONOFF ZBDongle-P/E, Alexa with Built-in Zigbee Hub, etc to monitor your home’s temperature and humidity.