Hat ENV It is able to detect the temperature, humidity, air pressure and magnetic field. This product relates via I2C protocol which allows you to obtain 4 types of environment data thru just 2pins, together with the tiny body, makes it a powerful application for envitonment data collecting.
Typical Magnetic Field：
- ±1300μT（x，y-axis），±2500μT（z-axis） - magnetic field resolution: 0.3μT
These products were very good after the practical testing was done!
I think that it is a defect that the power can not be turned off while charging.
I use several M5Stack modules and units. All work as expected and look good.
M5StickC ENV Hat (DHT12, BMP280, BMM150)