C&K 120199 is a low-cost, open-frame, single pole roller lever switch designed for on/off automation. It has a roller lever actuator, rated at over a million cycles and can be actuated even with heavy coats of contact cleaner. The 120199 is both contact-block and snap-action, making it suitable for a range of switching applications, such as signaling and indication. It features a smooth round actuating button, with a pressure point that is adjustable without disassembly and can accommodate a wide range of operating forces between 0.3 to 6.2N. It is dust-tight, with contact insulation resistance of over 1000M?, and is rated for up to 50W at 250VAC. It also has a small form factor, making the switch easy to mount, even in confined spaces.