{"product_id":"sonoff-zigbee-temperature-humidity-sensor-snzb-02b-airguard-th-lite-4-pack-swiss-sensor-0-2-c-accuracy-app-alerts","title":"SONOFF Zigbee Temperature \u0026 Humidity Sensor SNZB-02B AirGuard TH Lite 4-Pack — Swiss Sensor, ±0.2°C Accuracy, App Alerts","description":"\u003cp\u003e\u003cstrong\u003eThe SONOFF SNZB-02B AirGuard TH Lite is a compact Zigbee temperature and humidity sensor that delivers fast, accurate environmental readings with app alerts and smart-home integration.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eSmall but precise, the AirGuard TH Lite uses a professional-grade Swiss sensor to report temperature, humidity, dew point and VPD in near real-time. Built for discreet placement, this ultra-slim sensor is powered by standard AAA batteries for long-lasting remote monitoring in closets, wine cellars, terrariums, greenhouses and other tight spaces. It connects over Zigbee 3.0 to many hubs and voice platforms so you can automate fans, humidifiers, or receive push alerts when conditions change.\u003c\/p\u003e\n\n\u003ch3\u003eHow accurate and responsive is this sensor?\u003c\/h3\u003e\n\n\u003cp\u003eThe SNZB-02B is engineered for high precision and rapid updates. It offers ±0.2°C (±0.4°F) temperature accuracy and ±2% RH humidity accuracy, with data refreshing every five seconds for near real-time tracking. That combination makes it suitable when you need tight environmental control rather than rough estimates.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSwiss professional-grade sensing element for reliable measurements.\u003c\/li\u003e\n  \u003cli\u003eTemperature accuracy ±0.2°C \/ ±0.4°F, humidity ±2% RH.\u003c\/li\u003e\n  \u003cli\u003eData refreshes every 5 seconds for fast detection of changes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat connectivity and smart home platforms does it work with?\u003c\/h3\u003e\n\n\u003cp\u003eThe sensor runs on the Zigbee 3.0 protocol, so it pairs with a wide range of Zigbee gateways and hubs. SONOFF lists compatibility with iHost, NSPanel Pro, ZB Bridge Pro, and many third-party Zigbee bridges; common hubs like Echo (4th Gen) and SmartThings Hub V3 are also supported for voice control and automation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eZigbee 3.0 standard for broad interoperability with compatible hubs.\u003c\/li\u003e\n  \u003cli\u003eWorks with SONOFF bridges and select third-party Zigbee hubs and devices.\u003c\/li\u003e\n  \u003cli\u003eEnables smart scenes to trigger plugs, fans, or humidifiers automatically.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow are alerts, battery life, and placement handled?\u003c\/h3\u003e\n\n\u003cp\u003eSet custom temperature and humidity thresholds in the app to get immediate notifications when values move outside your set range. The sensor uses AAAs (standard batteries) and can reach up to two years of battery life under typical conditions, reducing maintenance for hard-to-reach locations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCustomizable push alerts for threshold breaches via the companion app.\u003c\/li\u003e\n  \u003cli\u003ePowered by replaceable AAA batteries with up to two years’ life.\u003c\/li\u003e\n  \u003cli\u003eUltra-slim form factor fits into confined spots like instrument cases or cabinets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I monitor derived metrics like dew point or VPD?\u003c\/h3\u003e\n\n\u003cp\u003eYes—beyond temperature and humidity, the AirGuard TH Lite reports derived environmental indicators such as dew point and VPD (vapor pressure deficit) in the app. These additional metrics help you fine-tune conditions for plants, wine storage, or sensitive gear without relying on separate instruments.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBuilt-in calculations for dew point and VPD for deeper environmental insight.\u003c\/li\u003e\n  \u003cli\u003eAll readings accessible remotely through the app for continuous monitoring.\u003c\/li\u003e\n  \u003cli\u003eUseful for horticulture, cellaring, and equipment protection where multiple metrics matter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The SONOFF SNZB-02B AirGuard TH Lite is designed for users who need accurate, low-maintenance environmental monitoring in small spaces—home gardeners, wine collectors, pet owners with terrariums, musicians protecting instruments, and anyone building smart-home automations. If you want fast, reliable readings, long battery life, and Zigbee compatibility for automation, the AirGuard TH Lite is a practical sensor to add to your setup.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the SNZB-02B work with Alexa and Google Home?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. When connected through a compatible Zigbee hub (like Echo 4th Gen or supported bridges) it integrates with Alexa and Google Home for voice control and automations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long do the batteries last?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Using standard AAA batteries, typical battery life can reach up to two years depending on reporting frequency and environment.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"SONOFF","offers":[{"title":"Default Title","offer_id":56822806839636,"sku":"B0H4QJQFKM","price":59.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/sonoff-airguard-th-lite-front-view.jpg?v=1786974824","url":"https:\/\/gardenluxe.co.uk\/products\/sonoff-zigbee-temperature-humidity-sensor-snzb-02b-airguard-th-lite-4-pack-swiss-sensor-0-2-c-accuracy-app-alerts","provider":"Gardenluxe Uk","version":"1.0","type":"link"}