Smart temperature and humidity sensor | 2.2-inch LCD display | IP65 protection | compatible with eWeLink system | 1.5m | ZigBee Sonoff SNZB-02LD

Technical specifications

Power supply: 1x CR2477 battery (up to 24 months operation)
Wireless protocol: Zigbee 3.0
Protection rating: IP65 (dustproof and moisture-resistant)
Dimensions: 62.8 × 58.5 × 21.8 mm
Weight: 86 g
Operating temperature: -10°C … +60°C
Probe temperature range: -40°C … +115°C
Measurement accuracy: ±0.2°C (temperature), ±2% RH (humidity)
Humidity range: 0% … 100% RH
Cable length: 1.5 m
Material: PC + ABS housing, probe tip – 304 stainless steel
Maximum altitude: up to 2000 m above sea level
Display: 2.2-inch LCD with clear digital readings
Compatibility: SONOFF ZigBee Bridge, Home Assistant, eWeLink, ZigBee 3.0 networks

Functions and features

Precise temperature and humidity monitoring with ±0.2°C accuracy, transmitting real-time data via ZigBee.

External stainless steel probe enables measurements in hard-to-reach or harsh environments (refrigerators, air ducts, outdoors).

Built-in LCD display for instant on-site readings.

Automation and alerts: configure smart reactions (e.g., turn on heating below 18°C, activate fan when humidity rises).

Reliable ZigBee 3.0 communication with low power consumption.

Long battery life: up to 2 years of operation without maintenance.

Applications

Home users: climate control in homes, basements, bathrooms, storage, or fridges.

Engineers / automation specialists: integration into smart or industrial monitoring systems.

Electricians: easy installation, wall or device mounting, compatible with ZigBee mesh networks.

Pros
✔ High precision readings
✔ IP65 – suitable for humid environments
✔ 1.5 m external probe
✔ LCD screen
✔ Long battery life
✔ Works with eWeLink, Home Assistant
Cons
✖ Requires ZigBee hub (no direct WiFi)
✖ Not for use above +115°C