SONOFF Zigbee Temperature & Humidity Sensor

Accurate Temperature & Humidity Monitoring

The SONOFF SNZB-02P Zigbee Temperature & Humidity Sensor provides accurate, real-time monitoring of temperature and humidity throughout your home or smart environment. Its Swiss-made hygrometer sensor delivers temperature accuracy of up to ±0.2°C and humidity accuracy of ±2% RH, making it suitable for everyday environmental monitoring.

Fast 5-Second Updates

The sensor can refresh its readings as quickly as every 5 seconds when environmental conditions change, giving your smart-home system current information about temperature and humidity. When conditions remain stable, the sensor reports periodically to conserve battery power.

Zigbee 3.0 Smart Home Connectivity

The SNZB-02P uses Zigbee 3.0 and requires a compatible Zigbee hub. SONOFF lists compatibility with gateways including the iHost, NSPanel Pro, ZB Bridge Pro and ZBDongle-E, as well as selected third-party Zigbee hubs.

Smart Comfort Alerts

Set your preferred temperature and humidity ranges and receive notifications when conditions move outside your selected limits. This makes it easier to monitor rooms and respond to changing environmental conditions.

Create Smart Automation Scenes

Use temperature or humidity readings as triggers for smart-home automations. For example, compatible smart devices can be configured to respond when the temperature or humidity reaches a particular level, helping automate fans, humidifiers and other equipment.

Track Historical Environmental Data

The eWeLink ecosystem supports historical temperature and humidity records, allowing you to review environmental changes over time. SONOFF specifies up to 6 months of cloud-based historical data, with records available by day, month or six-month periods and export functionality.

Long-Lasting Battery Operation

The SNZB-02P is powered by a CR2477 coin-cell battery. SONOFF specifies up to 4 years of battery life under its stated test conditions, although actual battery life depends on usage, environment and operating conditions.

Flexible Installation

The compact sensor can be installed in different locations using mounting options such as adhesive, adhesive with a metal plate or screw mounting. This makes it suitable for bedrooms, living rooms, baby rooms, greenhouses, equipment cabinets and other indoor spaces.

Compact Wireless Design

Measuring only 45 × 45 × 17.7mm, the SNZB-02P has a discreet design that can be positioned around the home without taking up much space.

Key Features

• SONOFF SNZB-02P
• Zigbee 3.0 temperature and humidity sensor
• Swiss-made hygrometer sensor
• Temperature accuracy up to ±0.2°C
• Humidity accuracy up to ±2% RH
• Readings refresh as quickly as every 5 seconds when conditions change
• Smart temperature and humidity alerts
• Smart scene automation triggers
• Historical data storage through eWeLink
• Up to 6 months of cloud history
• Data export functionality
• CR2477 battery
• Up to 4 years battery life under SONOFF test conditions
• Multiple mounting options
• Compact wireless design
• Requires a compatible Zigbee hub

Technical Specifications

• Model: SNZB-02P
• Product Type: Zigbee Temperature & Humidity Sensor
• Wireless: Zigbee 3.0 / IEEE 802.15.4
• MCU: EFR32MG22
• Battery: CR2477
• Input: 3V DC
• Temperature Accuracy: ±0.2°C / ±0.4°F
• Humidity Accuracy: ±2% RH
• Product Dimensions: 45 × 45 × 17.7mm
• Net Weight: 26.7g
• Housing: PC
• Working Temperature: -10°C to 60°C
• Working Humidity: 5–95% RH, non-condensing
• Installation: Indoor
• Colour: White
• Certifications: CE, FCC, ISED, RoHS

Compatible Zigbee Hubs

The SNZB-02P requires a Zigbee hub. Supported SONOFF options include ZBBridge, ZBBridge-P, ZBBridge-U, NSPanel Pro, iHost, ZBDongle-P and ZBDongle-E, with selected third-party gateways also supported.

Important Note

The SNZB-02P is a sensor and does not directly switch electrical loads. A compatible Zigbee hub is required, and smart automation requires compatible devices or scenes within the connected smart-home ecosystem.