Characteristics:Essential tool for quick and accurate readings of ph and free chlorine.An great tool for keeping your pool or spa within the safe Chlorine, PH ranges and different water sources.Save time and money with this electro- tester.Package Contains:1 x pH and Cl2 Tester with Probe1 x Instruction ManualSpecifications:Recommended level for pool and spa is 1.2 to 1.7ppm for chlorine and 7.2 to 7.8 for pHDimension: Main unit:190 x 120mmProbe w/ handle: 150mm longProbe only not including black band: 48mm longCable: 130mm longBattery Powered: 1 x AA 1.5V Alkaline BatteryItem Weight: 160g (battery excluded)