Sonoff TH Elite Temperature and Humidity Monitoring Switch 16A

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.