This waterproof Zigbee thermometer is IP65 rated and has a 1.5m probe - perfect for monitoring conditions in liquids or in enclosed spaces.
You could use this nifty Zigbee thermometer to:
- Make any fridge or freezer into a smart device that can notify you if it gets too warm
- Check the homes of your favourite fish, reptiles and amphibians are kept at the perfect temperature
- Keep an eye on the temperatures in your water tank, pool or bathtub
Stick it to a convenient ferromagnetic surface or hang it using the included loop. There's also a Velcro cable tidy included for if you want to make the probe wire shorter.
It comes with a battery pre-installed that will last for over two years allowing for minimal maintenance.
Get Smart, Automate!
Within your home automation setup you can create rules for what happens when the temperature changes in an area. These rules can trigger notifications or events such as opening a window or turning on another device. You can also easily, at a glance check the temperature throughout your house or garden.
You'll need a Zigbee gateway present on your home network to be able to log data and trigger automations. This could be an iHost or Zigbee Bridge if you want to use Sonoff's eWeLink app. Alternatively you could connect to a Raspberry Pi running Home Assistant (or a Home Assistant Green), equipped with a Zigbee dongle.
Why we love it
As well as feeding data back to your smart home controller this lovely little unit also includes a large, clear LCD display so you can see its readings at a glance without having to grab your phone.
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1.5m Probe - The 1.5m food-grade temperature probe enables accurate readings in liquids or enclosed spaces, reaching areas beyond the range of standard sensors.
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Wide Temperature Range - The probe can be used in environments between -40°C and 115°C
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IP65 Waterproof: The tidy UV resistant housing is designed for stable performance in humid and splash-prone environments.
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Over two years of battery life: Set it and forget it - just replace the batteries every couple of years!
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Long-range performance: Powered by the energy-efficient and secure Zigbee protocol, it offers excellent range while conserving power.
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Works great with Home Assistant: Our favourite open-source smart home software! Check out our beginner friendly Learn guide for set up instructions.
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Easy setup: Installation is a breeze with the included fixings—adhere to any ferromagnetic surface or use the hanging loop.
Tech Specs
- IP Rating: IP65
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Battery: CR2477 (included, lasts for over two years)
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Connectivity: Zigbee 3.0
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Base unit working temperature: The base unit's working temperature range is -10°C to 60°C (0 to 100% relative humidity). Note that the battery performance may start to degrade at temperatures below -4°C.
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Probe working temperature: -40°C~115°C
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Installation: Hanging loop or stick to any ferromagnetic surface.
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Dimensions: 62.8x58.5x21.8mm
- Cable length: 1.5m
Resources
Check out the SNZB-02LD knowledge centre for technical details, compatibility, troubleshooting and setup tips.
What is Zigbee?
Zigbee is a wireless standard enabling low-power, secure connections between smart devices. Widely used in home automation for devices like thermostats, sensors, and locks, its energy efficiency allows some devices to run for years on a single coin cell battery.
It has many benefits but the biggest one for us is its local nature, there's no cloud subscription or even internet connection required - everything stays within your home if you want it to. This makes it both incredible secure and also resilient to internet connection outages.
Many big brands have Zigbee supported devices including IKEA, Philips Hue, Tuya, and of course Sonoff. This means you can combine devices from different manufacturers into the same smart home setup ensuring you're not locked in to a single vendor - nice!
With an indoor range of 10–100 meters and extended outdoor coverage, Zigbee’s mesh networking ensures reliable communication, even if some devices go offline. Security features, including encryption and key protection, safeguard your smart home, keeping it secure and under your control.
Learn more about Zigbee on the official Zigbee website.