Features: 1Three large screens display at the same time, can simultaneously monitor ph, c, mv, ec, cf, TDS, complete functions, with high accuracy. 2Wall-mounted design for easy installation, operation and maintenance. 3It's also equipped with BNC composite electrode, electrode replacement is easy. 4The instrument adopts high quality material, IP55 waterproof and dustproof, sturdy and durable. 5Apply in water sources, aquarium, hydroponics, laboratory, spas, swimming pools and other water systems. 6Easy calibration of pH and TDS with just a mini-screwdriver. Condition: 100% Brand New Item Type: Water Quality Tester Model: PH-116 Material: ABS Color: As shown in the picture Size: Approx.150x81x23mm / 5.9x3.2x0.9in Weight: Approx.518g/18.3oz Measuring Range: 0.00~14.00PH Temperature: 0 C ~ 50 C (32 F ~ 122 F) EC: 0.00 to 19.99EC CF: 0.0 to 199CF TDS: 1019990ppm Mv: 1999~1999mV(PH-177) Precision: pH: 0.1 Temperature: 1.0 C EC, CF, TDS: 2% F.S Mv: 0.1c/oFS1digit Automatic Temperature Compensation: 0C~50C Working Temperature: 0 C ~ 50 C Power: DC 6V, with rechargeable battery Package included:1 x Water Quality Tester1 x Small Screwdriver1 x Adapter2 x Bracket1 x BNC Electrode2 x Suction Cup 1 x Hook1 x Instruction Manual