NodOn Zigbee Temperature and Humidity Sensor Review: Battery-Free Climate Sensing for Zigbee Homes
The NodOn Zigbee Temperature and Humidity Sensor is an indoor climate sensor designed to run without a battery, powered by a photovoltaic cell that harvests ambient light, with an optional CR2032 for dark rooms rated for about three years in complete darkness. It checks the room every 100 seconds and sends an update as soon as temperature moves by 0.5°C or humidity by 2%, and it joins any Zigbee 3.0 network as an end device. What it gives up is a display, Wi-Fi, Matter and any Google Home or Apple Home path, and it depends entirely on a Zigbee coordinator, with Home Assistant, Zigbee2MQTT, SmartThings and Alexa gateways documented as compatible.
- Low-maintenance multi-room monitoring
- Home Assistant and Zigbee2MQTT users
- SmartThings households
- Indoor temperature and humidity tracking
Pros
- Battery-free design, with an optional CR2032 rated for about three years
- Reports every 100 seconds and on every 0.5°C or 2% humidity change
- Zigbee 3.0 with a 30 m indoor range
- Works with Home Assistant through ZHA or Zigbee2MQTT, SmartThings and Alexa gateways
- Temperature and humidity alerts, automations and history through the gateway
- Compact and light, at 85 x 34 x 15 mm and 30g
- 2 year warranty
Cons
- Needs a Zigbee coordinator or gateway, with no Wi-Fi, Thread or Matter
- Not compatible with Google Home or Apple Home
- Indoor only, rated IP20
- No display
- End device only, so it does not strengthen the Zigbee mesh
- 0.5°C temperature resolution
Who is the NodOn Zigbee Temperature and Humidity Sensor for?
It suits a home that already runs a Zigbee network and wants temperature and humidity readings in several rooms without adding to the pile of coin cells to replace. Bedrooms, living rooms and a bathroom whose humidity should trigger an extractor fan are typical spots, since alerts and automations run on the gateway. It is small, at 85 x 34 x 15 mm and 30g, and it is rated IP20, so it belongs indoors. Home Assistant (through ZHA or Zigbee2MQTT), SmartThings and an Alexa-connected Zigbee gateway are all documented routes.
What the sensor offers
Temperature is measured from -5°C to 45°C with a 0.5°C resolution and humidity from 0 to 100% relative humidity, both specified for indoor use. The sensor reports every 100 seconds and also transmits the moment temperature shifts by 0.5°C or humidity by 2%, so a gateway sees changes quickly without the sensor streaming constantly. It is battery-free by design and accepts an optional CR2032, rated for about three years; with the cell fitted, Zigbee2MQTT exposes its battery level for low-battery alerts. On the network side it is Zigbee 3.0 with a 30 m indoor range, joining as an end device rather than a router. Temperature and humidity alerts, automations and history are handled by the gateway or home automation platform, which is where the readings are stored. NodOn backs it with a 2 year warranty, and it was the first NodOn product to carry the Works with SmartThings label.
What to know before you buy
A Zigbee coordinator or gateway is required: there is no Wi-Fi, Bluetooth, Thread, Z-Wave or Matter radio. Google Home and Apple Home are not compatible, so Alexa is the only voice platform, and only through a compatible Zigbee gateway. It does not extend the mesh, since it is an end device rather than a router. There is no display, so readings are only visible in the connected app or dashboard. The IP20 rating means no protection against water, so it is not for outdoor or wet locations. The 0.5°C resolution is fine for comfort and humidity control but coarser than the most precise sensors in the category, and the sensor itself keeps no history.
Is the NodOn Zigbee Temperature and Humidity Sensor worth it?
For a Zigbee household on Home Assistant or SmartThings, it is a standards-based way to add temperature and humidity readings to several rooms with little maintenance, frequent reports and a 2 year warranty. What you trade away is a screen, Wi-Fi convenience, Matter and any Google Home or Apple Home path. If you need any of those, or an outdoor rating, the display and IP-rated sensors in this category are the better fit.
Frequently asked questions
Does the NodOn Zigbee Temperature and Humidity Sensor need a battery?
No battery is required: it is designed to run battery-free. It can optionally take a CR2032, rated for about three years, and with the cell fitted Zigbee2MQTT exposes the battery level for alerts.
Does it need a hub?
Yes. It is a Zigbee 3.0 end device, so it needs a compatible coordinator or gateway. NodOn lists Jeedom, Home Assistant, Zigbee2MQTT, Alexa, Tuya & Co, Domoticz, Energeasy Connect and SmartThings among the compatible gateways.
How often does it report?
Every 100 seconds, and immediately whenever temperature changes by 0.5°C or humidity by 2%. It measures -5°C to 45°C and 0 to 100% relative humidity, indoors.
Does it work with Google Home or Apple Home?
No. It is a Zigbee-only device with no Matter path, and neither platform is compatible. Alexa, SmartThings and Home Assistant are the documented routes, each through a Zigbee gateway.
Does it work with Home Assistant?
Yes, through ZHA or Zigbee2MQTT, which supports this exact model (STPH-4-1-00) and exposes temperature, humidity and battery.
Can it be used outdoors?
No. It is rated IP20, an indoor protection level with no water resistance, and its measuring range is specified for indoor use.













