Electricians using an arc fault circuit interrupter (AFCI) circuit tester manufactured by Etcon may not be getting the shock protection they were expecting. Underwriters Laboratories (UL) is notifying consumers who have purchased the AF120 model AFCI test instrument hasn’t been evaluated by the UL and bears an unauthorized UL listing mark.

In addition to the potential shock hazard, the receptacle may not properly test all types of AFCIs. The product is distributed through electrical supply outlets and can be identified by the following markings on the product:

“ETCON Receptacle/AFCI Tester”

UL is asking all consumers who have this instrument to stop using it immediately and return it to the place of purchase.