brand new and high quality Features: Available for connecting the BNC socket directly into the input terminal of ORP meter or ORP controller or any ORP device that has a BNC input terminal. It gives you the flexibility to measure a solution in a container as far as 300 for cm from the device, and precisely determines the redox tension of the intended solution to be measured. Replaceable ORP electrode which provides instant ORP measurement, reliable and easy to use. Once your new ORP electrode probe is connected to the electrode input terminal, calibrate it first with the calibration (buffer) solutions before using the newly replace ORP electrode. Fit for measuring drinking, domestic and rainwater, aquariums, tanks, for ponds, pools, spas, etc.. Specification: Material: Plastic + Metal Length: Electrode: 14cm/5.51in; Cable: for 3m/9.84ft Diameter: 1.35cm/0.53in Measuring Range: -1999-1999mV Resolution: 1mV Accuracy: 0.1% F.S1 digit Connection: BNC socket Color: Random Delivery (If you buy more than one, colors you receive will be same or different.) Quantity: 1 Pc Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Redox Electrode 1 x Cable