UL 943 Class A GFCI operation with open-neutral protection * May be pre-wired to cable of any specified length up to 50 feet * Power indicator light goes off if GFCI trips, power is interrupted or GFCI is unplugged * Available in wiring modules that accept No. 18 (.300") thru No. 12 (.450") cord sizes Type SJ Only and No. 16 (.300") thru No. 12 (.597") cord sizes Type SJ or ST * 2 Year limited warranty