Eltex thread sensor 15965.
This thread sensor is designed to monitor up to 6 sewing threads on automatic sewing machines. It checks that the thread is moving in stitches.
Both no thread movement and continuous thread movement will result in an active output, which is normally used to stop the machine. It operates on the piezoelectric principle. This working principle makes it suitable for all types of thread and is insensitive to dust, dirt and humidity variations.
This model replaces its predecessors 15961 / 15962