{"product_id":"sonoff-airguard-th-lite","title":"Sonoff AirGuard TH Lite","description":"\u003cp\u003e\u003cstrong\u003eSONOFF AirGuard TH Lite \u003c\/strong\u003e(SNZB-02B) is an extremely compact and highly accurate Zigbee 3.0 temperature and humidity sensor that brings professional environmental monitoring in a small format. While basic sensors only report temperature and humidity, the AirGuard TH Lite goes a step further by calculating Dew Point and Vapor Pressure Deficit (VPD) — critical metrics for preventing mold, protecting sensitive electronics, or optimizing indoor greenhouses.\u003c\/p\u003e\n\u003cp\u003eSince it uses standard AAA batteries instead of expensive button cells, it is easier to maintain and provides up to 2 years of reliable operation.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eHigh-precision sensing:\u003c\/b\u003e Powered by a premium Sensirion sensor and providing exceptional accuracy (±0.2 °C and ±2 % RH), you can fully trust the data that drives your climate automations.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eAdvanced environmental metrics:\u003c\/b\u003e In addition to standard temperature and humidity, it intelligently calculates dew point (to warn you about condensation) and VPD (essential for plant care and greenhouse monitoring).\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003e5-second refresh rate:\u003c\/b\u003e Unlike older sensors that only update every few minutes, the AirGuard TH Lite can report changes as often as every 5 seconds, ensuring that your smart fans, heaters, or dehumidifiers react instantly to sudden climate changes.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eStandard AAA batteries:\u003c\/b\u003e Instead of less common CR-series button cells, this sensor operates on two standard, widely available AAA batteries, ensuring up to 2 years of continuous operation, depending on the reporting frequency.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eUniversal Zigbee 3.0 compatibility:\u003c\/b\u003e It integrates seamlessly into local smart home platforms such as Home Assistant (via ZHA or Zigbee2MQTT), SmartThings, and eWeLink, requiring a compatible Zigbee coordinator.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\n\u003cthead\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/thead\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eModel\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd\u003e\u003cspan\u003eSNZB-02B (AirGuard TH Lite)\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eWireless protocol\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd\u003e\u003cspan\u003eZigbee 3.0 (IEEE 802.15.4)\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eMeasured values\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd\u003e\u003cspan\u003eTemperature, relative humidity\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eCalculated values\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd\u003e\u003cspan\u003eDew point, vapor pressure deficit (VPD)\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eTemperature accuracy\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd\u003e\u003cspan\u003e±0.2 °C\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eHumidity accuracy\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd\u003e\u003cspan\u003e±2 % RH\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eData refresh rate\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd\u003e\u003cspan\u003eUp to every 5 seconds\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003ePower supply\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd\u003e\u003cspan\u003e2x AAA battery (LR03) 1.5V (included)\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eEstimated battery life\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd\u003e\u003cspan\u003eUp to 2 years\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003ePlatform compatibility\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd\u003e\u003cspan\u003eHome Assistant (ZHA, Zigbee2MQTT), eWeLink, SmartThings, Amazon Alexa (with Zigbee hub)\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eOperating temperature\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd\u003e\u003cspan\u003e-20 °C to +60 °C\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eOperating humidity\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd\u003e\u003cspan\u003e5 % to 95 % RH (non-condensing)\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eDimensions\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd\u003e\u003cspan\u003e66.3 mm × 27.8 mm × 20 mm\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eWeight\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd\u003e\u003cspan\u003e~43 g (including batteries)\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eHousing material\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd\u003e\u003cspan\u003eWhite polycarbonate (PC)\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\u003cp\u003e\u003cb\u003ePackage contents\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eSONOFF AirGuard TH Lite sensor (SNZB-02B)\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e2x AAA battery (pre-installed)\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eAdhesive mounting pad and lanyard for hanging\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003eQuick start guide\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"SONOFF","offers":[{"title":"Default Title","offer_id":54869820113234,"sku":null,"price":12.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1114\/7123\/1314\/files\/SNZB-02B-main.webp?v=1790589961","url":"https:\/\/shop.dmitrix.eu\/en\/products\/sonoff-airguard-th-lite","provider":"Dmitrix","version":"1.0","type":"link"}