This small power meter is not expensive for what it does. The reason I put an average score: - Super hard to read screen (even with good glasses and fill light) - Very little written notice, which explains nothing (eg units for the calculation of the energy expended) - Even with batteries, the device loses its data when I unplugged (I left the original assembly, I should be check if they were inserted in the right direction). - No way to access cost 2 (it probably is not much, but then why mention it in the manual?)
By cons, super fast delivery. No complaints about that.
