This product is the latest digital dissolved oxygen electrode independently researched, developed, and produced by BOQU Instrument. The electrode is light in weight, easy to install, and has high measurement accuracy, responsiveness, and can work stably for a long time. Built-in temperature probe, instant temperature compensation. Strong anti-interference ability, the longest output cable can reach 500 meters. It can be set and calibrated remotely, and the operation is simple. Can be widely used in urban sewage treatment, industrial sewage treatment, aquaculture and environmental monitoring and other fields.