1.BNC connector, suitable for most PH and controller BNC 2.has a breaking force and can be adsorbed on the glass wall. 3.With high-quality low-noise cable,the signal output length can be more than 20 meters without interference 4.Signal stability,less interference 5.Application: Suitable for a wide range of aquariums, hydroponics, laboratories and others Working temperature: 0 - 60 Celsius Response time: less than or to 1min H trial range: 0.00-14.00PH colour:Black Material:plastic size:16cm Cable length: 70CM Package Contents: 1* electrode probe 1* suction cup 2*PH paper Only the above package content, other products are not included. Note: Light 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.