Two LEDs illuminate ultra-subminiature switches from the inside. The NL switch series from CIT Relay and Switch, Minneapolis, Minn., citswitch.com is intended to work with other low-profile surface-mount components. Contact resistance is less than 50 m and insulation resistance exceeds 100 M. Contacts are silver-plated phosphor bronze with terminals of silver-plated brass. All switch materials are RoHS compliant.