This device was designed to prevent the insertion of objects that children try to stick into the outlets. Nearly, 2,400 children get an Electric shock or burns due to putting objects like keys, scissors, paperclips, etc. into outlets each year. Installing TRR’s is one of the safest ways to prevent any injury. In order for the TRR’s outlet to work it requires a double prong entry.
Since, 2008 TRR’s have become required. All homes that are built in 2008 and newer should have the TRR’s.