The APEM Inc. part 12166X778 is a high-performance toggle switch designed for various applications that require reliable and precise control. With a 4PDT (Four Pole Double Throw) configuration, this switch offers exceptional versatility in controlling multiple circuits. The switch operates in an On-On position, providing seamless transition between two separate settings. Capable of handling up to 4A of current at 125 VAC and 28 VDC, this toggle switch is suitable for both high and low voltage applications. The switch features standard actuation, allowing for easy operation and tactile feedback. Solder lug terminals ensure secure and durable electrical connections, making this switch ideal for rugged environments. With its robust design and high-performance capabilities, the APEM Inc. part 12166X778 is the perfect choice for demanding applications where reliability and precision are paramount.