The Sonoff THR320D is a smart switch from the TH Elite series designed to monitor and control temperature and humidity in your home or business. It features an integrated LCD screen that lets you check real-time environmental data at a glance, while the 20A maximum load capacity allows it to handle demanding appliances. You can connect it to various sensors via the RJ11 port, including waterproof options for pools, soil sensors for irrigation, or standard temperature and humidity probes for indoor climate control. This device connects via 2.4 GHz Wi-Fi and integrates with the eWeLink app, Amazon Alexa, and Google Assistant for voice control. It supports LAN mode, meaning your local automations continue to work even if your internet connection drops. You can set up to eight smart schedules or use the Auto Mode to trigger devices based on specific temperature or humidity thresholds, making it a practical choice for managing wine cellars, greenhouses, or underfloor heating. Built with a high-temperature resistant housing and overvoltage protection, the unit measures 98 x 53 x 32 mm and complies with RoHS standards. For those who need to track trends, the device stores six months of history locally, which you can export to an .xlsx file. It also integrates with Home Assistant and IFTTT, providing flexibility for users who prefer a centralized smart home ecosystem.