All feature momentary or alternate action switching and a gravity or spring-powered lens guard. The clear acrylic guard helps prevent accidental activation while letting operators see legends and button colors. The guards use a wrap-around design for mounting on the top, bottom or sides, depending on hinge position.

Electro-Mech Components Inc., 826 Floradale Ave., South El Monte, CA 91733, (626) 442-7180,