WL-N/WLM-N Two-Circuit Limit Switches Omron Industrial Automation WL-N/WLM-N Two-Circuit Limit Switches provide a selection of switches to match the environment and application. These solutions feature various head shapes and include roller lever, plunger, flexible rod, and fork lock lever switches. The double-pole, double-break (DPDB) operation ensures circuit braking with an IP67 degree of protection. These Omron solutions provide a neon lamp or LED to indicate the operating status and thus make startup checks and maintenance easy.