SONOFF SNZB-02B AirGuard TH Lite Zigbee Temperature Humidity Sensor Thermometer Hygrometer with App Alert Remote Monitoring Works with Alexa Google Home 4Packs

It measures temperature within ±0.2°C and humidity within ±2%RH, refreshing every 5 seconds

It also provides real-time Dew Point and VPD analysis to detect condensation risks, prevent mold growth, and support healthier plant transpiration

At just 27.8 mm wide and 20 mm thick, it mounts by hanging or adhesive for flexible use in tight spaces like guitar cases, humidors, jewelry cabinets, and wine racks

It runs on two easily replaceable AAA batteries for up to 2 years of maintenance-free use

You can view temperature, humidity, dew point, and VPD trends anytime in the app, with up to six months of historical data