SONOFF SNZB-02B AirGuard TH Lite Zigbee Temperature and Humidity Sensor

- Swiss Sensirion industrial-grade sensor: 0.2 C temperature and 2% RH humidity accuracy, refreshed every 5 seconds

- Dew point monitoring detects condensation risk early to help prevent mould on walls, furniture and valuables

- VPD (Vapour Pressure Deficit) analysis for growers and indoor gardeners

- Ultra-compact at 66.3 x 27.8 x 20 mm - fits guitar cases, humidors, wine racks, jewellery cabinets and reptile enclosures

- Lanyard and 3M adhesive pad included for hanging or stick-on mounting

- Up to 2 years battery life on 2 x AAA batteries (included) - tool-free replacement, no coin cells

- 6 months of history with trend graphs and data export in the eWeLink app

- Trigger automations: fans, heaters, dehumidifiers and smart TRVs respond automatically to temperature and humidity changes

- Works with Amazon Alexa, Google Home, SmartThings and Home Assistant (ZHA / Zigbee2MQTT)

- Fully local operation with Home Assistant - no cloud or eWeLink account required

- Requires a Zigbee 3.0 hub or coordinator (sold separately) - indoor use only

- 2-year manufacturer warranty

What's in the box
1 x SONOFF SNZB-02B AirGuard TH Lite Sensor
2 x AAA Batteries (pre-installed)
1 x Lanyard
1 x 3M Adhesive Pad
1 x Quick Start Guide