Sensors and Switches › Beach Comber Harwil Q12DS-C2 Flow Switch, Molex Image 1 of 3 Image 2 of 3 Image 3 of 3 Beach Comber Harwil Q12DS-C2 Flow Switch, Molex $79.99 Manufacturer: Harwil Manufacturer #: Q-12DS-C2/2/6M/NO/4F Replaces: 390493 , 6656-BC , HWL-851-1003 Quantity: Add To Cart Added! Manufacturer: Harwil Manufacturer #: Q-12DS-C2/2/6M/NO/4F Replaces: 390493 , 6656-BC , HWL-851-1003