I've had IMIT and Honeywell stats for about 10yrs and i haven't had a single one fail but i have heard of these battery ones failing a few times in the past, you don't know if you dont try and people can make that choice themselves.
If you post a product up that has a line like that in it what do you expect, mechanical stats are not unreliable simple as that.
If you post a product up that has a line like that in it what do you expect, mechanical stats are not unreliable simple as that.