Sonoff TH20 Elite 20A Temperature & Humidity Smart Switch

High-Power Smart Switching with Temperature & Humidity Control

The Sonoff TH20 Elite 20A is the premium high-current smart switch with built-in temperature and humidity monitoring. With a 20A relay rating, it handles the heaviest household loads — large geysers, industrial air conditioners, pool heaters, and greenhouse systems — while automating based on real-time environmental conditions.

• 20A high-current relay — handles large geysers, heavy-duty air conditioners & industrial loads
• Temperature & humidity monitoring via external sensor (sold separately)
• Automate switching based on precise temperature or humidity thresholds
• WiFi connected — remote control and monitoring via the eWeLink app from anywhere
• Set schedules, timers, and condition-based automations
• Overload, overcurrent, and overtemperature protection for safe high-load operation
• Compatible with Amazon Alexa and Google Home voice control
• Works with Home Assistant via eWeLink integration
• RJ9 sensor port — compatible with Sonoff temperature/humidity sensors

Maximum load, maximum intelligence — the TH20 Elite handles your heaviest appliances and automates them based on the conditions that matter.