["brand new and high quality\nFeatures:\nIndustrial online dissolved oxygen meter is an intelligent online continuous real-time monitoring instrument, and the sensor adopts a polarographic coated dissolved oxygen electrode. Monitor is widely used in power plants, petrochemical, metallurgical electronics, mining, paper, biological fermentation, food and beverage, sewage treatment, aquaculture and other industries.\nIt can dissolved oxygen value and temperature measurement, upper and lower limit control, current output, and digital communication.\nAutomatic temperature compensation.\nCan high limit alarm and low limit alarm, dual-circuit relays.\nAudible alarm can be turned on/off, it can be set on or off through the interface options.\n\nSpecifications:\nProduct name: Dissolved Oxygen Monitor\nMeasuring range: 0-20mg/L\nResolution: 0.01mg/L\nError: ±0.3mg/L\nDisplay mode: 128 * 64 dot for matrix LCD\nTemperature compensation: 0-40 ℃ automatic\nCurrent output: 4-20mA\nAlarm output: a set of high and low limit alarm contacts\nPower supply: 220V±10% 50Hz\nPower consumption: ≤3W\nTemperature range: 0～60 ℃\nHumidity: ≤85%RH\nMaterial: ABS\nPackage Size: app.26x25x15cm/10.24x9.84x5.91in\nColor: As pictures shown\nQuantity: 1set\n\nNote:\nPlease allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage includes:\n1set x Dissolved Oxygen Monitor(other accessories demo in the picture is not included.)"]