Features: PH electrode has single cylinder, allowing direct connection of pH meter, controller, or input terminals of any pH devices with BNC input terminals. The accurate and reliable pH electrode probe can provide an almost instantaneous reading to help you re-check the water quality and provides more reliability. Standard BNC connection, suitable for most pH meters and controllers. Made of quality materials, durable for long-term use. Widely used in aquariums, horticulture, fish tanks, hydroponics, laboratories, and other industries. Specifications: Material: ABS + Printed Circuit Board. Type: Non-rechargeable, Rechargeable (optional). PH value range: 0–14 PH. Temperature range: 0–60°C. Working voltage: 50.2V (alternating current and direct current). Working current: 5–10mA. Detectable concentration range: PH 0–14. Detection temperature range: 0–80°C. Response time: 5 seconds. Settlement time: 60 seconds. Component power: 0.5W. Operating temperature: -10–50°C (nominal temperature: 20°C). Humidity: 95% relative humidity (nominal humidity: 65% relative humidity). PH test module size: Approx. 42 x 32 x 20mm / 1.65 x 1.25 x 0.78 inches. Output: Analog voltage signal output. With 4pcs M3 mounting holes. Note: NO Model: Use non-rechargeable PH probe. YES Model: Use rechargeable PH probe. Please allow 0–1cm error due to manual measurement; ensure you do not mind before ordering. Please allow for slight color differences due to different monitor resolutions. Package includes: 1 x PH Electrode Probe BNC Interface, 1 x PH 0–14 Value Test Sensor Module.