The main goal is i want to know the humidity and temperature of the air in the room. the second goal is i want to know is there any hydrogen leak in that room, because i'm doing testing on fuel cell stack using hydrogen as fuel so if there a leak buzzer will on and running the switch to cut off all fuel inlet.
Currently i have cheap room humidity and temperature display so if i compare the value it have a slightly different on humidity display, so which one do i trust for now? because i don't have a calibration tool for two variable above.
