Usage Tips:BNC connector, suitable for most pH and controller BNC connectorsApplication: Suitable for a wide range of aquariums, hydroponics, laboratories and othersResponse time:less than equal 1minOperating temperature:0-60Temperature (C):0-50Connection form:Low-noise cable leads directly.Zero potentiometer (PH):71PH range:0-14 error (mV):less than equal 15Internal resistanceMohm(25):less than equal 250Theoretical percentage slope%: equal 97Terminal Blocks:BNC plugThe repeatability (pH):less than equal 0.017Tips:The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance.Colour:As ShownMaterial:PlasticPackage Contents:1 * Electrode SensorOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.