ETC 470LT 70-Degree Lens Tube, Black 100207704 RF filter: Common mode: 425

RF filter: Common mode: 425 kHz

And between the combined shielding of the cast metal chassis and the custom-wound transformer

Automatic circuit cut-off to protect pump if fog fluid tank runs dry

Wide frequency response for detailed sound quality across the entire audible frequency spectrum

ETC 470LT 70-Degree Lens Tube, Black 100207704 RF filter: Common mode: 425ETC 470LT 70 Degree Lens Tube, Black The 470LT is from the Source Four Ellipsoidal Series of lights from ETC. It's an accessory that is a 70 degree lens tube assembly with the lens installed that comes in a black finish. When used with a Source Four Ellipsoidal Series light it provides a wide spread of the light pattern.