This new water quality monitor is professional and necessary tool for testing ORP / PH / Temperature / EC / CF / RH / TDS of the solution level. Suitable for aquarium pool, laboratory, and environment water. Specifications: Range: pH: 0.00 ～ 14.00pH ORP: -1999mV ～ 1999mV RH: 10%RH ～ 99%RH Temperature: -50 ～ 70 (-58 ～ 158) EC: 0.00 ～ 19.99EC CF: 0.0 ～ 199.9CF TDS: 10 ～ 19990ppm Resolution: pH: 0.01pH ORP: 1mV RH: 1%RH Temperature:0.1(0.2) EC: 0.01EC CF: 0.1CF TDS: 10ppm Accuracy: pH: 0.1pH ORP: 5mV RH: 5%RH Temperature: 1(2) ECCFTDS: 2%F.S Temperature Compensation: 0 ～ 50 (32 ～ 122) Working temperature: 0 ～ 50 (32 ～ 122) Power supply: DC 6V (Power Adapter Usable) Battery: 2 * NI-MH 4.8V Battery （Included） Color: Black Material: ABS Plug Type: EU / US (Optional) Input Voltage: 100～240V Item Size: 152 * 80 * 26mm / 6.0 * 3.1 * 1.0in (Excluding Conductivity Probe) Item Weight: 229g / 8.1oz (7 in 1 Meter Body) Package Size: 23.5 * 16 * 6cm / 9.3 * 6.3 * 2.4in Package Weight: 669.5g / 23.6oz Package List: 1 * 7 in 1 Water Quality Monitor with Conductivity Electrode 1 * User Manual 1 * pH Electrode 1 * ORP Electrode 1 * Temperature Electrode 1 * AC-DC Adapter 2 * Suction Cups 1 * Bracket 1 * Mini Screwdriver