Avoid accidental disconnection and related safety issues with 16/3 SJTW locking extension cord Female end slide lock for protection against cable disconnection Slide button lock compatible with all other manufacturer's connections 16 AWG, 3-wire grounded indoor/outdoor extension cord Features a GLOW PLUG to indicate when power is ON Water-resistant cord remains flexible down to -40¿F ETL certified to UL standards 13A, 125V, 1625W