The W4S105C is an Omron industrial relay designed for use in applications such as motor control, lighting circuits, and temperature control. It features 5PDT contacts, an input voltage range of 48VAC with a pull-in voltage range of 22V to 30V, and a switching capacity of 10A for resistive loads at 1/4 HP and 10A for inductive loads at 1/3 HP. It comes with a 1 year warranty. The W4S105C is a reliable and durable product from Omron, a leading manufacturer of industrial relays.