Red LED indicator light used to indicate operations on accessories such as water heaters and electric steps. Normally used with Red Snap In switch Cover #13125. 16A at the rate of 125 VAC, 3/4 HP, 10A at the rate of 250 VAC 1/2HP, 10A at the rate of12VDC. UL/CSA/VDE approved. Features cut out dimensions = .687 x .50 switch dimensions = .812 x .625. Instructions included.