Features： 1、Fully Waterproof: ORP 201H high accuracy composite laboratory electrode has waterproof performance and wild field applicability. 2、Accurate and Extensive Measurement: The ORP electrode has a wide detection range, with a measurement range of ?2000 to +2000 ORP. Its measurement is accurate, with an accuracy of ±10mV. 3、Durable and Practical: Rugged and durable, economical and practical, ORP electrode fully meets the needs of various industry tests, and adapts to various ORP Q9 and BNC connectors. 4、Ideal Replacement Probe: Our ORP electrode can be regarded as an ideal replacement probe for ORP meter, ORP controller or any ORP device that has a BNC input terminal. 5、Usage Scenarios: ORP electrode is generally used in scenarios requiring water testing, include growing tent, reservoir, water tank, and hydroponics. Specification： Item Type: ORP Electrode Material: ABS Weight: Approx. 112g/3.95oz Probe Diameter: 1.2cm/0.47in Electrode Length: 14.8cm/5.83in ORP Measurement Range: - 2000-+2000 Resolution: 1mV Accuracy: ±10mV Operating Temperature: 0-50℃ Connection: 50ohm BNC socket Application: laboratory, domestic water, fish tank, swimming pool, etc Package List： 1 x ORP Electrode