tempSensor is powered by micro USB 5V connector so you can use any phone charger as long as it's at least 200mA.
It may be calibrated in its app.
Measuring range: from -55°C to 125°C
tempSensor is easily configured in its Android or iOS app as well as through a web browser.
You can set the app to notify you once the temperature is higher or lower than desired.
The app offers historical data up to one year free of charge.
tempSensor alsoallows for setting up to 30 so called 'actions'. It can trigger a GET URL action from within its own settings so you can use it with Home Assistant or Hubitat's Maker API to change a state of a virtual switch etc. Also this allows for triggering your automation hub from a remote location using a cloud URL for an endpoint. That means a tempSensor can be placed in a different wi-fi than a hub.