Shelly H&T is a Battery Powered ESP8266 WiFi Temperature & Humidity Sensor

WiFi and long battery life do not usually go hand-in-hand, but as we’ve seen recently, companies have managed to design battery powered WiFi cameras that are said to last up to a year on a…

from CNXSoft – Embedded Systems News www.cnx-software.com/2018/10/30/shelly-ht-battery-powered-esp8266-wifi-temperature-humidity-sensor/
via IFTTT