Temperatūros ir drėgmės jutiklis Sonoff SNZB-02B AirGuard TH Lite ZigBee

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Prekė: Temperatūros ir drėgmės jutiklis Sonoff SNZB-02B AirGuard TH Lite ZigBee. Kategorija: Jutikliai.

• Gamintojas: Sonoff
• Modelis: SNZB-02B

⭐Intelligent monitoring

SONOFF AirGuard TH Lite SNZB-02B is a high-precision wireless temperature and humidity sensor designed for smart home systems based on Zigbee 3.0 technology.

The device monitors room conditions and transmits current measurements to a compatible Zigbee gateway. In addition to temperature and humidity, the sensor also automatically calculates the dew point and VPD, i.e. the water vapour pressure deficit.

⭐The most important advantages

• Accurate temperature measurement with an accuracy of ±0,2°C.
• Measurement of relative humidity with an accuracy of ±2% RH.
• Automatic calculation of dew point.
• Automatic VPD calculation.
• Refresh data every 5 seconds.
• Zigbee 3.0 wireless communication.
• Powered by two popular AAA batteries.
• Working time up to about 2 years, depending on the conditions and the set reporting frequency.
• Measurement history up to 6 months in the eWeLink app.
• Slim housing with a width of only 27,8 mm.
• Mounting with adhesive tape or hanging.
• Compact size suitable for small spaces.

⭐Accurate temperature and humidity measurements

The sensor is equipped with a precise measuring element, so it can accurately monitor the microclimate in the room.

⭐Measuring range

• Temperature: -20°C to 60°C.
• Relative humidity: 5 to 95% RH, non-condensing.
• Temperature accuracy: ±0,2°C.
• Humidity accuracy: ±2% RH.

Such parameters allow the sensor to be used both for daily monitoring of the temperature in the house and for more demanding applications where stability of conditions is important.

⭐Point of dew

The dew point indicates the temperature at which water vapor begins to condense. Monitoring this value helps detect risks earlier:

• condensation of water vapour,
• dampness of the walls,
• mold formation,
• damage to furniture and equipment,
• excessive humidity in the room.

⭐VPD

VPD, or Vapor Pressure Deficit, determines the difference between the amount of moisture in the air and the maximum amount of moisture that the air can retain at a given temperature.

This parameter can be useful, among others, for:

• plant care,
• growing plants indoors,
• monitoring of greenhouses,
• control of conditions in utility rooms,
• microclimate analysis.

⭐ ZigBee protocol

What distinguishes ZigBee from classic WiFi is a sufficiently long working time of battery-powered devices (unattainable with the classic WiFi protocol) and signal transmission through accessories powered by 230V.

In addition, selected ZigBee devices (230V mains powered) become part of the Mesh network. This means that if a module is unable to connect directly to the ZigBee gateway, it communicates with it through another closest accessory of this system. The repater in the ZigBee ecosystem are devices powered by 230V, such as PSMART, Aqara, OXT Zigbee relay, Sonoff ZigBee, TUYA, 230V sockets or bulbs.

Thanks to this, you can create an extensive network that can operate over much longer distances than classic WiFi.

⚙ Specification

• Manufacturer: SONOFF
• Model: SNZB-02B
• Product Name: AirGuard TH Lite
• Device type: Temperature and humidity sensor
• Communication: Zigbee 3.0 / IEEE 802.15.4
• Power supply: 3 V DC
• Battery: 2 × AAA / LR03
• Temperature measurement: Yes
• Humidity measurement: Yes
• Calculation of dew point: Yes
• VPD calculation: Yes
• Temperature accuracy: ±0,2°C
• Humidity accuracy: ±2% RH
• Working temperature range: from -20°C to 60°C
• Working humidity range: 5 to 95% RH, non-condensing
• Data refresh: even every 5 seconds
• Data history: up to 6 months in the application
• Dimensions: 66,3 × 27,8 × 20 mm
• Weight: 43 g with batteries
• Housing material: PC
• Color: White
• Place of application: Indoors
• Certificates: CE, FCC, RoHS

Specifications