IOT-485-DO Digital dissolved oxygen sensor independently developed and produced by BOQU Instrument.it's with standard RS485 Modbus, The housing of conductivity sensor is Sstainless steel SS316 and measurement electrode is graphite for harsh application, easy to install, and this Digital dissolved oxygen sensor has high measurement accuracy, sensitive response, 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. It can be widely used in monitoring the conductivity of thermal power, chemical fertilizer, metallurgy, environmental protection, pharmaceutical, biochemical, food, fermentation, brewing and tap water and other waste water application.