Leviton SmarTest GFCI

How often do you test your GFCI?  My what!?  Yeah, that's the problem.... and why UL changed things. Starting June 29, 2015 Underwriters Laboratories (UL) has announced a revision to standard UL 943. This revision requires that all UL certified Class A residential and commercial grade box-mounted GFCI have: a) An auto-monitoring function that will allow for periodic automatic testing (self-test) of the GFCI device and