Item Number 40022S. - 2-Sided legend: only from Southwire! - Push button GFCI Test: allows you to quickly test that the GFCI trip function is working. GFCI Analog Receptacle Tester. - 7 tests in one: open ground, open neutral, open hot, hot and ground reversed, hot and neutral reversed, correctly wired, and GFCI.
eBay