Conductivity meters perform 'in situ' measurements of the environment, swimming pools, spas and agriculture. Model CONDT1: - Conductivity, TDS and temperature measurements - Auto Cal in 2 points - With temperature compensation and on-screen indication of calibrated standards. - LCD screen - IP67 Tobacconists - Includes patterns and manual - Works with 4 1.5 AA batteries Model CONDT5: - Measurements of conductivity, TDS, salinity and temperature - Auto Cal in 3 points - With temperature compensation and on-screen indication of calibrated standards. - Color LCD screen according to this in size, calibration or error - IP67 Tobacconists - Self-diagnosis message, battery level and calibration error - Includes patterns and manual - Works with 4 1.5 AA batteries