Shelly H&T; Gen3 is a Wi-Fi humidity and temperature sensor with a large e-paper display for clear, at-a-glance readings. It includes an NTP-synced digital clock and supports Google Assistant, Amazon Alexa, and Samsung SmartThings for voice control and automations. Power it with 4 AA batteries (not included) or via USB-C for continuous operation. When battery powered, it measures at set intervals and reports changes based on thresholds. When USB powered, it measures and updates more frequently and reports data more often. Bluetooth is included to help with setup, and a reset button is available for manual control. The device supports Wi-Fi 802.11 b/g/n and Bluetooth 4.2. It operates from 32°F to 105°F (0°C to 40°C) and is recommended for 30% to 70% RH environments.