Check the listing for details. WattStopper LMLS-400. Condition: New. Listed at 35.00 USD. The WattStopper LMLS-400 is a PIR motion sensor designed for industrial automation and motion control applications. This sensor is capable of detecting and tracking motion in its field of view, making it ideal for monitoring and controlling various industrial processes. With its reliable performance and easy installation, the WattStopper LMLS-400 is a valuable tool for improving efficiency and safety in industrial settings.