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Two small black plastic square sensors on a tabletop

SONOFF SNZB-02P control sensor 2-pack

SKU CH-19ZS-87E2W MPN SNZB-02P

Two Zigbee 3.0 temperature and humidity sensors with ±0.2°C accuracy, comfort alerts and four-year battery life

  • Item nameSNZB-02P SONOFF
  • Rated voltage120 V
  • Placement and useTabletop
  • Item descriptionSONOFF, SNZB-02P, CR2477 button cell
  • Overall size45 cm × 45 cm × 17.7 cm
  • Surface finishBlack
  • Accurate temperature readings within ±0.2°C thanks to Swiss-made sensor
  • Humidity measured to ±2%RH with data refreshed every 5 seconds
  • Zigbee 3.0 hub compatibility for integration with Echo 4th Gen and SmartThings Hub V3
  • Instant phone alerts when temperature or humidity leaves your comfort range
  • Up to half-year free cloud storage with exportable history data

Two-pack Zigbee temperature and humidity sensors

The SONOFF SNZB-02P 2-pack provides a pair of indoor sensors that report temperature and humidity to a Zigbee 3.0 hub. Each unit uses a CR2477 button cell rated for up to four years of operation and is intended for tabletop placement in living areas or bedrooms. The set suits households that want redundant coverage or monitoring in two separate rooms.

Swiss-made sensor with comfort alerts and cloud

The plastic housing in black finish weighs 0.09 kilograms and measures 45 cm x 45 cm x 17.7 cm. A Swiss-made sensing element delivers temperature accuracy of ±0.2°C and humidity accuracy of ±2%RH with readings refreshed every 5 seconds. When conditions drift outside a user-defined comfort range, a notification is sent to the paired phone app. Up to six months of data are stored in the cloud and can be exported for review.

Replaces standalone thermometers without remote

This pair upgrades basic analogue or single-room digital hygrometers that lack connectivity and alerting. The jump is worthwhile when you need continuous remote visibility, automated comfort warnings, or historical trend data across two locations. It does not suit buyers who want a single sensor, a display built into the unit, or operation without a compatible Zigbee 3.0 hub.

How it compares

Measured against everything we stock in Sensors, Buzzers & Control Modules, at today’s prices. Recalculated every night.

Price $42.99
Pricier than about 63% of the 89 comparable items (median $29.99).

Specifications

Product
Model nameSNZB-02P
Item nameSNZB-02P SONOFF
Product typeMotion Sensor
Power
Rated voltage120 V
Size & build
Surface finishBlack
Main materialPlastic
Product weight0.09 kg
Overall size45 cm × 45 cm × 17.7 cm
More details
Placement and useTabletop

Questions about this item

Does the Zigbee 3.0 interface cap the sensor to specific hubs?

The sensor works with any hub that follows the Zigbee 3.0 protocol, including SONOFF iHost, NSPanel Pro, ZB Bridge Pro, ZBDongle-E, Echo 4th Gen and SmartThings Hub V3.

What physical space does the 45 cm x 45 cm x 17.7 cm unit need for tabletop mounting?

The sensor sits flat on any level surface; its footprint is 45 cm by 45 cm with a 17.7 cm height, so allow that much clear tabletop area.

How is the CR2477 battery installed, and what step do people miss?

Remove the cover, insert the CR2477 cell with the positive side facing up, then reseal the cover fully so the moisture seal stays intact.

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