NodOn Zigbee Temperature and Humidity Sensor vs Sonoff SNZB-02UL AirGuard E-Ink TH

A custom comfort range, one of six presets or edited by hand, pushes a phone notification when the reading leaves the band.

The 2.4 GHz radio is Zigbee (IEEE 802.15.4), not Wi-Fi

Zigbee 3.0 at 2.4 GHz with a 30 m indoor range, so it joins an existing Zigbee network and needs a compatible coordinator or gateway | NodOn lists Jeedom, Home Assistant, Zigbee2MQTT, Alexa, Tuya & Co, Domoticz, Energeasy Connect and SmartThings as compatible gateways | End device only, not a Zigbee router. It is battery-free and can optionally run on a battery.

Zigbee 3.0 (IEEE 802.15.4) end device. SONOFF lists the ZBBridge-P, ZBBridge-U, Bridge-M, NSPanel Pro and iHost as its own gateways, plus the Aeotec SmartThings Hub V3 and the Zigbee Echo models. Time, date and weather on the screen need a gateway or Home Assistant.

Scenarios run through the compatible Zigbee gateway or Home Assistant, not on the sensor itself | NodOn lists heating, comfort and humidity-triggered scenarios among the sensor's documented uses

Smart scenes trigger above or below a temperature or humidity threshold, or when the device goes offline, with a false alarm delay. The sensor is a trigger only, never an action.

The gateway or home automation platform stores the readings over time; the sensor itself keeps no history.

Six hours of temperature and humidity history on the screen without a gateway, and up to six months of temperature, humidity, dew point and VPD curves in the app or Home Assistant, with CSV export.

NodOn lists Alexa among the compatible gateways and voice assistants for this model, so its temperature and humidity readings are exposed through an Alexa-connected Zigbee gateway.

SONOFF lists Alexa temperature and humidity queries, and an Echo with a built-in Zigbee hub (Echo Plus 2nd, Echo 4th, Echo Show 2nd) as a compatible gateway.

Zigbee2MQTT supports this exact model, the STPH-4-1-00, and exposes battery, temperature and humidity. | NodOn also lists Home Assistant among the compatible gateways for this model. | Works with Home Assistant through ZHA and through Zigbee2MQTT.

Zigbee2MQTT works out of the box, while ZHA needs the script SONOFF publishes in its help center for the advanced functions such as the remote sensor display and the weather data.

NodOn announced this model as the first NodOn product to receive the Works with SmartThings label, so it pairs with a SmartThings hub as a standard Zigbee 3.0 device.

SONOFF lists the Aeotec SmartThings Hub V3 as a compatible Zigbee gateway, with a SmartThings temperature and humidity query.

Measures 0 to 100% relative humidity, indoor | Transmits as soon as a +/- 2% humidity variation is detected

Accuracy of plus or minus 2% RH, refreshed every 5 seconds, with dew point and VPD calculated from the temperature and humidity readings.

Measures -5°C to 45°C with a 0.5°C resolution, indoor | Reports every 100 seconds and transmits as soon as a 0.5°C variation is detected

Swiss Sensirion sensor, accuracy of plus or minus 0.2 C (plus or minus 0.4 F), refreshed every 5 seconds. Screen and app resolve to 0.1 C.