Yes, the Sonoff TH Elite 20A can control the air conditioner (turning it on/off) and send notifications based on the temperature you set.
Sonoff TH Elite Temperature and Humidity Monitoring Switch 16A
Smart switch that turns devices on or off based on temperature or humidity — pair it with a Sonoff probe (sold separately) and automate your water heater, fan, or floor heating. Up to 16A. Works manually even when Wi-Fi is down.
17 $
What people use it for
- Baby Roomget alerted on your phone if your baby's room gets too cold — so they stay comfortable.
- Heater Tempcheck how hot your water heater is from your phone — anytime, from anywhere.
- Garden Timerset a timer to water your garden automatically — no need to remember.
- AC Thermostatcontrol your AC's temperature using the built-in thermostat — set it and forget it.
- Boiler Switchturn your water boiler on or off from your phone — no need to be home.
- Heater Thermostatset the temperature of your water heater using the built-in thermostat — no guessing, no overheating.
- Room Thermostatset your target temperature and let your heater do the rest — your room stays exactly how you like it.
Available
Good to know
- The temperature/humidity sensors are sold separately — see compatible sensors.
- Requires a neutral wireThe third wire in your electrical box, usually blue or gray. Not all homes have it — an electrician can check in a few minutes. for installation.
- Turn off the power at your breaker before installation. We recommend having an electrician handle it.
- Commonly used to automate water heaters, irrigation pumps, or HVAC based on temperature or humidity readings.
- Check if your home has a neutral wire before ordering — an electrician can verify this quickly.
Smartio Guarantee
- Free Delivery on orders above $50
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- Cash on Delivery available across Lebanon
What people use it for
- Baby Roomget alerted on your phone if your baby's room gets too cold — so they stay comfortable.
- Heater Tempcheck how hot your water heater is from your phone — anytime, from anywhere.
- Garden Timerset a timer to water your garden automatically — no need to remember.
- AC Thermostatcontrol your AC's temperature using the built-in thermostat — set it and forget it.
- Boiler Switchturn your water boiler on or off from your phone — no need to be home.
- Heater Thermostatset the temperature of your water heater using the built-in thermostat — no guessing, no overheating.
- Room Thermostatset your target temperature and let your heater do the rest — your room stays exactly how you like it.
Works with:
Product Information
Sonoff TH Elite — Smart Temperature & Humidity Switch
This is a smart switch with a live LCD screen showing temperature and humidity in real time. Connect a Sonoff temperature probe (sold separately), set your rules in the app, and the switch will turn devices on or off automatically — turn the water heater on when temp drops below 45°C, turn the fan on when humidity goes above 65%, whatever rule you want.
The point: you stop manually flipping switches on and off. The device does it for you, based on what’s actually happening in the room.
Why people buy it
- Replace your water heater thermostat. Pair with a waterproof probe, set “off at 55°C, on at 45°C” — you stop heating water you don’t need.
- Auto-control floor heating. Keep a comfortable temperature without remembering to switch it off when you leave.
- Dehumidifier on autopilot. Set it to turn on whenever humidity goes above your limit.
- Notifications when temperature or humidity crosses a threshold — useful for greenhouses, server closets, baby rooms.
Key Features
- Live LCD display — temperature and humidity refresh every 5 seconds.
- Up to 8 automation rules per device (e.g. “if temp > 30°C and humidity > 60%, turn on fan”).
- Works without internet — LAN control means automations keep running even with Wi-Fi down.
- Up to 16A — handles water heaters, floor heating, large dehumidifiers.
- 6 months of history — review by hour, day, or month. Export to Excel.
- Dry contact output for controlling boilers, motor valves, or alarm systems.
- Manual override button — physical switch on the device works even when Wi-Fi is down.
- Voice control — works with Google Assistant and Alexa.
💡 Pro Tip: Replace your water heater’s old mechanical thermostat with this. Pair with a waterproof Sonoff probe, set “off at 55°C, on at 45°C” — you’ll always have hot water and stop wasting electricity heating it past what you need.
⭐ Frequently Asked Questions
Does it come with a sensor?
No — the probe is sold separately. Pick the one matching your setup: the WTS01 waterproof probe for water heaters and pools, or a regular probe for dry environments. The TH Elite needs a probe to work.
How much current can it handle?
The 16A version handles standard water heaters, ACs, and ovens. It runs 220V.
Can the probe reach my water heater if it’s far from the switch?
Yes — the sensor cable can be extended up to 25 meters using a regular phone cable or Cat6 ethernet cable. Plenty of slack for most setups.
Does it measure how much electricity my appliance uses?
No — this is a temperature/humidity monitor, not a power meter. If you want power monitoring on the same circuit, pair this with a Sonoff S60 plug or use a smart breaker.
Does it work if my internet is down?
Yes. LAN control means automations keep running locally even with no internet — you just can’t control it from outside the house until the connection comes back.
Can I still use it manually if Wi-Fi is down?
Yes — there’s a physical button on the device that switches the load on/off, regardless of Wi-Fi state.
Can it be installed outdoors?
No — the relay is not waterproof. Install it indoors or in a protected enclosure. The temperature probe (e.g. WTS01) is waterproof and can be placed outdoors.
How easy is the install?
Manageable as a DIY job if you’ve wired a switch before. If not, any electrician can do it in 15 minutes.
Specifications
What's in the Box

Delivery, Returns & Warranty
Delivery
Enjoy free standard delivery across Lebanon on orders over $50, or free pickup on orders over $30. We also offer same-day delivery options. For more details, visit our delivery information page.
Returns
We provide a 15-day return window for all orders, subject to certain exclusions. Please note that cash refunds are not available. For complete details, visit our return policy page.
Warranty
Our products are warranted to be free from manufacturing defects. If a product sold by us is found to be defective, we will, at our discretion, repair or replace it with a new one. Certain exclusions apply. For full details, please review our warranty policy page.
Buying a gift? Select gift-wrap at checkout (extra cost).
Hear It From Our Buyers
1 verified review from real customers
The waterproof box is highly recommended!
THS01 Sensor
Sensor Type: Temperature & Humidity sensor Connector type: RJ9 4P4C Temperature Measuring Range: –40℃~+85°C Humidity Measuring Range: 0~100%RH Cable Length: 50cm
WTS01 Sensor
Sensor Type: Waterproof temperature sensor Connector type: RJ9 4P4C Working Temperature: -40℃~+115℃ Length: 150cm
MS01 Sensor
Sensor Type: Soil Moisture Sensor Humidity Measuring Range: 0~100%RH Operating Temperature Range: 0℃~60°C Cable Length: 50cm

Each TH Elite can support only one sensor.
The relay is not waterproof and should be installed indoors or in a protected area.
Yes, you can control the relay from your mobile phone.
The maximum load for the relay is 16A.
Yes, the product requires a sensor to function, as mentioned on the product page.
Yes, the switch can be used to control devices like heaters and pumps.
Yes, it can work with a temperature sensor to automate control based on temperature readings.
Yes, it can be used for monitoring both temperature and humidity.

