The Hammond 166L8 is an economical single primary filament transformer designed for various applications requiring low voltage power. It features an open style, channel bracket, and two-hole chassis mount, along with minimum 6" long leads for easy integration. The transformer utilizes a dual bobbin design, eliminating the need for electrostatic shielding. It's constructed with Class B insulation (130 degrees C) and is UL listed as a Class A (105 degree C) design, ensuring reliable performance and safety. The 166L8 is also CSA certified and undergoes a hi-pot test of 2,000V RMS.