The non-contact liquid level sensor is suitable for non-metallic containers without direct contact with the liquid which are not affected by the or other contaminants. The intelligent adjustment of the reference of level and level memory function, level meter mode, achieve multi-point sequence. High stability, high sensitivity and strong anti-interference ability ensure that the electro- magnet is not affected. Compatible with most 5~24V power supplies. Strong compatibility thanks to a wide range of containers made of non-metallic materials such as plastic, glass, ceramics, etc. with an induction distance of 20 mm. Suitable for all types of detection of curved surfaces, arcs, cylindrical containers or pipes. Package contents: < p>1 x non-contact level sensor