Here's a podcast about some monitoring equipment available in the USA.
https://theengineeringedge.podbean.com/e/s2-e6-the-everyday-tech-keeping-bees-buzzing/
And this is the supplier of the products
https://broodminder.com/
https://theengineeringedge.podbean.com/e/s2-e6-the-everyday-tech-keeping-bees-buzzing/
And this is the supplier of the products
https://broodminder.com/
May your bees read the same books as you do.