"Waterproof and bouyant. Dual-level LCD displaying EC or TDS and temperature. Self-check at start up, displaying remaining battery life and ensuring proper working condition. Stability indicator and hold feature. Stainless steel temperature probe for faster and more precise temperature measurement. Automatic temperature and calibration compensation. Celsius\/Fahrenheit selectable. User adjustable EC\/TDS conversion factor and temperature coefficient factors. EC\/TDS graphite electrode for greater accuracy and reduced contamination (spare sensors available). Auto shut-off. Operating temperature range: 0 to 60°CMaximum Conductivity = 20mS\/cmMinimum Conductivity = 0mS\/cmBest Accuracy = ±2 %Resolution = 0.01 mS\/cmBattery Type = Button Cell (1.5 V) x 4Battery Life = 100 hPower Source = BatteryDimensions = 163 x 40 x 26mmWeight = 100gHeight = 26mm"