Temperature & Humidity Sensors · Head to head

Sonoff SNZB-02DR2 AirGuard TH vs Sonoff SNZB-02M AirGuard TH Pressure Sensor

Full Smart Temperature/Humidity Sensors comparison in 2026

Updated October 2026
Data from Amazon and official Sonoff site.
2026 verdict
Same brand, same family, and still a real trade-off: a screen on one, a barometer on the other.
Sonoff SNZB-02DR2 AirGuard TH
Winner
Sonoff SNZB-02DR2 AirGuard TH
$14.90

Last recorded price

Buy on Amazon USA
The Sonoff SNZB-02DR2 AirGuard TH is the more practical everyday pick of the two AirGuard sensors, with a 3.6 inch display, a lower price and a Bluetooth Proximity Mode that reads straight from a phone with no gateway at all. The Sonoff SNZB-02M AirGuard TH Pressure Sensor answers with an atmospheric pressure reading the DR2 does not have, useful for the dew point and VPD figures a greenhouse or cellar automation wants, though it has no screen and no Bluetooth of its own. Both share the same core temperature and humidity accuracy and reach the same smart home platforms through a Zigbee hub. Choose the Sonoff SNZB-02DR2 AirGuard TH for a glanceable screen and no-hub Bluetooth access, and the Sonoff SNZB-02M AirGuard TH Pressure Sensor specifically for its barometric pressure reading.
Winner
Sonoff SNZB-02DR2 AirGuard TH
Sonoff

Sonoff SNZB-02DR2 AirGuard TH

Prime exclusive deal
$14.90

Last recorded price

Buy on Amazon USA

Also sold in packs

  • Pack of 2$28.90$14.45 per unitYou save $0.90Buy
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FeatureSonoff SNZB-02DR2 AirGuard THSonoff SNZB-02M AirGuard TH Pressure SensorWinner
Price$14.90$19.90Sonoff SNZB-02DR2 AirGuard TH
Rating4.43.8Sonoff SNZB-02DR2 AirGuard TH
ConnectivityBluetooth, ZigbeeZigbeeSonoff SNZB-02DR2 AirGuard TH
ScreenYESNOSonoff SNZB-02DR2 AirGuard TH
SensorsTemperature, HumidityTemperature, Humidity, Atmospheric PressureSonoff SNZB-02M AirGuard TH Pressure Sensor
Warranty2 years2 yearsTie
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterTie
AlertsTemperature Alerts, Humidity Alerts, Low Battery AlertsTemperature Alerts, Humidity Alerts, Low Battery AlertsTie

What the differences mean

Display

The Sonoff SNZB-02DR2 AirGuard TH has a 3.6 inch LCD readable from across a room. The Sonoff SNZB-02M AirGuard TH Pressure Sensor has no screen at all, so its readings live only in the app.

Extra sensor

The Sonoff SNZB-02M AirGuard TH Pressure Sensor adds a barometer, which the app uses to calculate dew point and VPD. The Sonoff SNZB-02DR2 AirGuard TH has no pressure sensing.

Reading without a hub

The Sonoff SNZB-02DR2 AirGuard TH can pair straight to a phone over Bluetooth in Proximity Mode, with no gateway needed. The Sonoff SNZB-02M AirGuard TH Pressure Sensor has no Bluetooth and always needs a Zigbee hub for any reading.

Battery

The Sonoff SNZB-02DR2 AirGuard TH runs on two AAA cells with no published battery-life rating. The Sonoff SNZB-02M AirGuard TH Pressure Sensor is rated for about 2 years on a single CR2477 cell.

Price

The Sonoff SNZB-02DR2 AirGuard TH is typically the cheaper of the two, on top of adding the larger screen.

Which one to buy if

What owners say

Owners of both AirGuard sensors praise how quickly Zigbee2MQTT and ZHA pick them up and how closely the readings track a reference thermometer. Sonoff SNZB-02DR2 AirGuard TH owners lean on the large 3.6 inch screen for a number they can read from across the room, and like that it runs on ordinary AAA batteries rather than a coin cell, though several find that a setting only takes effect after the button on the back is pressed. Sonoff SNZB-02M AirGuard TH Pressure Sensor owners value the extra barometric reading for dew point and VPD in a greenhouse or cellar automation, but a few report the pressure value simply missing on a SmartThings hub, and note the CR2477 battery is not something most people keep spare.

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Sonoff SNZB-02DR2 AirGuard TH
  • Sonoff SNZB-02M AirGuard TH Pressure Sensor

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Frequently Asked Questions

Which is better overall: Sonoff SNZB-02DR2 AirGuard TH or Sonoff SNZB-02M AirGuard TH Pressure Sensor?

The Sonoff SNZB-02DR2 AirGuard TH is the more practical everyday pick, with a large screen, a lower price and Bluetooth access with no hub. The Sonoff SNZB-02M AirGuard TH Pressure Sensor is the one to choose specifically for its barometric pressure reading.

What is the biggest difference between the Sonoff SNZB-02DR2 AirGuard TH and the Sonoff SNZB-02M?

A screen against a barometer. The Sonoff SNZB-02DR2 AirGuard TH has a 3.6 inch display but no pressure sensor, while the Sonoff SNZB-02M AirGuard TH Pressure Sensor measures atmospheric pressure but has no screen.

Does the Sonoff SNZB-02M AirGuard TH Pressure Sensor have a screen?

No. It has no display at all, so every reading lives in the connected app. The Sonoff SNZB-02DR2 AirGuard TH has a 3.6 inch LCD showing the reading directly on the device.

Can the Sonoff SNZB-02DR2 AirGuard TH be read without a Zigbee hub?

Yes, through its Bluetooth Proximity Mode, which pairs straight to a phone. The Sonoff SNZB-02M AirGuard TH Pressure Sensor has no Bluetooth and needs a Zigbee hub for any reading at all.

Who should buy the Sonoff SNZB-02M AirGuard TH Pressure Sensor?

Buyers who specifically want a barometric pressure reading, along with calculated dew point and VPD, for a greenhouse, cellar or workshop automation.

Who should buy the Sonoff SNZB-02DR2 AirGuard TH?

Buyers who want a glanceable on-device screen, a lower price and the option to read the sensor over Bluetooth with no hub at all.

Full comparison table

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