How It Works

1
Activate the battery
Pull the battery tab on the back. LCD lights up immediately and shows current readings.
2
Place the probe
Run the 1.5m probe into the tank, fridge, or area you want to monitor. Mount the LCD body where you can see it.
3
Pair with Zigbee Bridge
Open eWeLink → Zigbee Bridge → "Add subdevice". Hold the sensor's reset button for 5 seconds. Pairs in 20 seconds.
4
Set automations
Build a scene: temperature triggers a smart breaker, plug, or fan. Add multiple sensors for different tanks or rooms.
5.0 from 553 verified Google & Facebook reviews — real orders across Lebanon Read reviews

Is This Right for Me?

Display: 2.2" LCD
Probe: 1.5m external (waterproof)
Protection: IP65 (splash + dust resistant)
Protocol: Zigbee 3.0
Power: CR2477 coin cell (included)
History: 180 days in eWeLink
Hub required: Sonoff Zigbee Bridge / NSPanel Pro / iHost
Mounting: Tabletop, wall, or magnet

Product Details

Sonoff IP65 Zigbee LCD Thermometer with Probe (SNZB-02LD)

A smart Zigbee (a wireless smart home protocol that connects devices through a hub) thermometer with a clear 2.2″ LCD display and a 1.5-meter external temperature probe. The probe lets you measure temperature in hard-to-reach spots — inside a water tank, fridge, aquarium, or any enclosed space — while the display unit stays outside where you can read it.

IP65 waterproof rating means it handles humidity and splashes with no problem.


Key Features:

  • 1.5m External Probe: Insert the probe into water, fridges, or enclosed areas while keeping the display unit outside.
  • IP65 Waterproof: Splash-proof — works in humid bathrooms, kitchens, and outdoor areas.
  • 2.2″ LCD Display: Easy-to-read screen with temperature and humidity.
  • 180-Day History: View up to 6 months of historical data in the eWeLink app.
  • Smart Automations: Trigger actions based on temperature — e.g., turn on heater when temp drops.
  • Battery Powered: CR2477 battery — wireless and long-lasting.

💡 Pro Tip: Use the external probe to monitor your water heater tank temperature. Place the display unit outside the heater closet so you can see the temperature at a glance — and set automations to control heating.

What You Get

Reads inside tanks + fridges
1.5m external probe lets you measure temperature in the water heater, fridge, freezer, or aquarium while the LCD stays outside.
IP65 — survives humid spots
Splash- and dust-resistant. Mount it in bathrooms, on outdoor walls, or near sinks without worrying.
Read it without your phone
Bright 2.2" LCD shows current temperature and humidity at a glance.
Automate the water heater
Pair with a smart breaker: heater turns on at 45°C, off at 55°C. Stops 24/7 heating.
180 days of history
6 months of temperature/humidity graphs in eWeLink — useful for diagnosing weird boiler or fridge behavior.

Works With

Amazon Alexa (via Bridge)
Works
Google Assistant (via Bridge)
Works
Sonoff NSPanel Pro
Works
Home Assistant (via Bridge)
Works

What's in the Box

1× Sonoff SNZB-02LD thermometer
1× 1.5m external waterproof probe
1× CR2477 battery (pre-installed)
User manual (also in Arabic)

Delivery & Pickup

Standard Delivery
All Lebanon governorates — Greater Beirut usually next day; Tripoli, Jbeil, Saida, Tyre, Zahle, Akkar and the rest within 2–4 working days.
$4 · Free over $50
Express Delivery
Faster shipping — usually within 24 hours of order confirmation (Greater Beirut & Metn). Same-day not guaranteed.
$6 flat
Pickup — Dekwaneh
Collect from our Dekwaneh store. Weekdays 10am–5pm, Sat 10am–1pm.
$3 · Free over $30

Warranty & Support

6-month Local Warranty
Covers defects in materials & workmanship. Handled here in Lebanon.
WhatsApp Support — Always On
Can't set it up? Message us. We reply within minutes, not days.
14-day Exchange — Unopened Items
The item must be unopened and in its original packaging. Exchange it for a product of equal or higher value — we do not give cash refunds. Opened items are covered by the warranty if there is a factory defect.
Free Setup Help
Every order includes a setup guide — plus a free WhatsApp call if you ever need a hand.

Customer Reviews (1)

5.0
1 review
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Smartio customer
June 2026
✓ Verified Purchase

Frequently Asked Questions

Can I use this to automate devices like a fan or smart breaker?
Yes — create a scene in eWeLink: "if probe reads above 30°C, turn on the fan" or "if tank temp drops below 45°C, turn on water heater breaker". For accurate readings, place the probe at the right height (inside the tank, not just touching the side).
Does this need a bridge?
Yes — it's a Zigbee device, not Wi-Fi. You need a Sonoff Zigbee Bridge Pro, NSPanel Pro, or iHost. The LCD itself works locally without a hub, but you won't get phone alerts or automations without one.
Can I use this for multiple water heaters?
Yes — buy one sensor per boiler. Each pairs to the same Zigbee Bridge and shows up separately in eWeLink. Automations can target each one independently.
Does the probe survive being submerged in hot water?
Yes — the probe is waterproof and handles tank temperatures (typically up to 60-80°C). The LCD body sits outside the tank, kept dry.
What battery does it use and how long does it last?
CR2477 coin cell, included. Typically lasts 8-12 months under normal use.
Can I connect it to my smart circuit breaker?
Yes — in eWeLink, set up an automation: probe temperature triggers the breaker. For example, the Tongou eWeLink breaker can turn the water heater on or off automatically based on probe readings.
Can I install it outside?
Yes — IP65 protection handles splashes and dust. Don't submerge the LCD body itself though. Mount it on a sheltered outdoor wall.
What's the difference between this and the SNZB-02D?
The 02D is indoor-only with no probe — a self-contained LCD for room temp and humidity. This 02LD adds an external 1.5m waterproof probe (for tanks, fridges) and IP65 protection on the body for wet locations.

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