3 PLUG OUTLETS - Extender turns one grounded outlets into three, Accepting Both Polarized and Grounded Plugs. HEAVY DUTY - Vinyl construction, for indoor use in dry locations only, 15 amps, 125v, 60 Hz, 1875 watts max, UL listed for safe. T-SHAPED - allows easy access and accepts three adapters, and allows adding more outlets where you need them most, behind a nightstand to charge your phone, e-reader, and alarm clock. SPACE SAVING - Design to be used for outlets, electrical, household, workshops, industrial, machinery, and appliances. LIGHTWEIGHT - The three outlets electronic adapter is small and lightweight making it easy to carry.