I’ve purchased a few of these with good results until this one. Bought this one to replace a 13 yr old GFI that would trip occasionally. Read the instructions and replaced my old one lead-for-lead. Green ‘test’ light on and no test/reset regardless of what I did. Put the old one back in and threw this unit in the trash. China QC (or lack, thereof) strikes again. Won’t be purchasing more of these.