A spring with an outer diameter of 1.4mm, wire diameter of 0.15mm and a length of 4mm cannot be detected by the smallest and most sensitive cylindrical proximity switches of Keanes.

SHENZHEN BEST TECHNOLOGY CO., LTD. was founded in 2003. The company gathered a group of returned foreign students and domestic professional technology, management personnel; their years of research and development of automation for the company's products provide a reliable guarantee of high quality performance. The main products are float level sensors, proximity sensors, float level switches, magnetic proximity switches, level switches, water flow switches, reed switches, reed relays, PP floats, NBR floats, stainless steel floats and so on. Widely used in: humidifier, coffee machine, kitchen equipment, medical equipment, constant temperature and humidity box, automotive industry, industrial equipment, household appliances and other scientific and technological fields