Turck India Automation Pvt. Ltd. Offers Slot Sensors with Active Face. Turck India Automation Pvt. Ltd. Manufactures Industrial Automation, Electronic Components, Sensors, Interfaces, and Fieldbuses. The Slot Sensors with Active Face activated if an object enters its slot. The Slot Sensors with Active Face detect targets reliably even if a definite assessment of the distance to the active face is not possible due to lateral approach. The housing of the slot sensors is U shaped with the active face between the two arms.