the project is aimed for household use and to be mounted on an air conditioner for temperature monitoring so it should be safe to use, I am currently using HLK-pm01 but it is adding a lot to the overall cost , I need to chop down the cost as one of the main concern is to make this project low cost, and i do not aim to use battery as that will bring the hassle of charging which will break its continuity of operation.
also, I am curious to know how these consumer electronics products make so cheap products along with the packaging and other costs with ac to dc converter and other electronics in them.
also, I am curious to know how these consumer electronics products make so cheap products along with the packaging and other costs with ac to dc converter and other electronics in them.