Sonoff - SNZB-02B

Sonoff Zigbee AirGuard Lite

Name: Sonoff Zigbee AirGuard Lite
Brand: Sonoff
SKU: SNZB-02B
Price: 27.95 AUD
Availability: InStock

$27.95

GST included.

Monitor temperature and humidity in your home and trigger devices to keep it stable.

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Size guide

Sonoff Zigbee AirGuard Lite

$27.95

Product description

SONOFF AirGuard TH Lite Zigbee Temperature & Humidity Sensor (SNZB-02B)

Upgrade your environmental monitoring with the SONOFF AirGuard TH Lite (SNZB-02B)—a compact, high-precision Zigbee 3.0 sensor engineered for superior climate control. Designed with an ultra-slim form factor and powered by standard AAA batteries, it seamlessly fits into tight, enclosed spaces while delivering real-time environmental data directly to your smart home system.

Key Features & Benefits:

Comprehensive Climate Insights (Temp, Humidity, Dew Point & VPD): Go beyond basic monitoring. In addition to real-time temperature and humidity, the AirGuard TH Lite calculates Dew Point and VPD (Vapor Pressure Deficit) via the app—making it ideal for indoor gardening, greenhouses, and sensitive climate control.
Swiss-Engineered Precision & Fast 5-Second Refresh: Equipped with a professional-grade Swiss sensor delivering exceptional accuracy (±0.2°C / ±0.4°F for temperature and ±2% RH for humidity). With data refreshing every 5 seconds, you receive instant, reliable insights into your environment.
Ultra-Slim, Space-Saving Design: Measuring just 66.3 × 27.8 × 20 mm, the compact bar profile fits effortlessly into hard-to-reach or tight spaces where traditional sensors won't fit—such as cigar humidors, guitar/instrument cases, reptile terrariums, wine cellars, attics, and server racks.
Standard AAA Battery Convenience (Up to 2 Years Life): Powered by 2× standard AAA (LR03) batteries, offering up to 2 years of reliable performance. Enjoy long-term monitoring without worrying about coin-cell availability or frequent replacements.
Instant Comfort Alerts & Smart Automation: Set customized upper and lower comfort thresholds for temperature and humidity. Receive instant mobile push notifications when conditions stray outside your target range, or create smart scenes to automatically trigger smart plugs, fans, dehumidifiers, or heaters.
Universal Zigbee 3.0 Compatibility: Built on standard Zigbee 3.0 protocol. Works seamlessly with SONOFF hubs as well as third-party Zigbee gateways including Amazon Echo (with built-in Zigbee), Samsung SmartThings Hub V3, and open platforms like Home Assistant.
Historical Data Tracking & Cloud Storage (eWeLink): Track trends over time with secure cloud storage. View daily, monthly, or half-year historical graphs and export/download your data to optimize climate conditions and analyze environmental patterns.

* In order to use this product, a Zigbee hub or gateway is necessary. The Sonoff ZBBridge gateway is recommended if you plan to use the eWeLink app, which is the default Sonoff app. Additionally, the ZBDongle devices work well with the ZHA or Zigbee2MQTT platforms. Both of these options allow for integration with open smart home platforms such as Home Assistant and OpenHab.

Specifications

Model: SNZB-02B (AirGuard TH Lite)
Wireless Protocol: Zigbee 3.0 (IEEE 802.15.4)
Power Supply: 3.0V (2 × 1.5V AAA Batteries)
Battery Life: Up to 2 Years
Temperature Accuracy: ±0.2°C (±0.4°F)
Humidity Accuracy: ±2% RH
Operating Range: -20°C to 60°C (-4°F to 140°F) | 5%–95% RH (non-condensing)
Dimensions: 66.3 × 27.8 × 20 mm
Weight: 43.0g (including batteries)
Casing Material: PC (Fire-retardant)
Certifications: CE / FCC / RoHS

Processing time

Orders are processed within 1–3 business days (Monday to Friday, excluding public holidays). Processing time begins on the day you place your order.

Shipping Rates

Service	Rate
Standard Shipping	$10 flat rate
Express Shipping	$15 flat rate
Expedited Dispatch	From $20, calculated at checkout
Free Standard Shipping	Orders over $129 (AU & NZ)

International rates calculated at checkout.

Expedited Dispatch

Order before 2pm AEST Mon–Fri for same day dispatch via Express shipping. Orders placed after 2pm or on weekends dispatch next business day.

Returns

30-day return window from date of delivery. Items must be unused and in original packaging. Contact us to initiate a return — return address provided upon approval.

Warranty

All Dialedin products carry a 12-month warranty against manufacturing defects and failure. Consumables excluded.

For full details see our Shipping Policy and Return and Refund Policy