Features: Triple LCD display User-friendly with ATC °C/ °F selectable temperature unit With backlight Easy calibration Continuous monitoring of water quality Comes with pH calibration powder & EC calibration solution Applications such as aquariums, hydroponics, laboratory, spas, swimming pools, and other water systems Specifications: Measurement range: EC: 0.00~19.99EC pH: 0.00~14.00pH CF: 0.0~199CF Temp: 0~55°C (32~131°F) TDS: 10~19990ppm Resolution: EC: 0.01EC pH: 0.01pH CF: 0.1CF Temp: 0.1°C (0.2°F) TDS: 10ppm Accuracy: pH: ±0.1pH Temp: ±1°C(±2°F) EC/CF/TDS: ±2%F.S. Automatic Temperature Compensation: 0~50°C (32~122°F) Operating Temperature: 0~50°C (32~122°F) Power Supply: DC6V with rechargeable battery installed Dimension: 152 x 80 x 20mm Weight: 223gms Set Includes: 1 x 5 in 1 Water Quality Monitor 1 x pH Electrode with BNC connector 1 x EC Electrode with BNC connector 1 x 4.01ph calibration powder 1 x 6.86ph calibration powder 1 x 9.18ph calibration powder 1 x EC 12.88 calibration solution 1 x EC 1413 calibration solution 1 x Metal Hanging Bracket 2 x Mounting Plastic Brackets 1 x Mini Screwdriver 1 x Power Adapter English User Manual