NPL Linear Position Sensor Amphenol Piher NPL Linear Position Sensor offers a reliable, cost-effective solution for slider potentiometer and linear position sensing applications. The sensor features a simple construction with only three component parts and an overmolding manufacturing technique. The NPL series withstands 50,000 life cycles. Amphenol Piher NPL Linear Position Sensor is ideally suited for automotive seat position memory, central locking, headlamp position, and rear-view mirror position applications.