HM TDS Meters ( Total Dissolved Solids) KL-740 & KL-741 ( With Temp Display)

FEATURES Includes an internal digital thermometer ( celsius) . The smallest and lightest TDS meter available on the market. Hold Function - Saves measurements for convenient reading and recording. Auto-off function - Turns off meter after 10 minutes of non-use to conserve batteries. Dual Range - Measures from 0 - 999ppm, with a resolution of 1ppm. From 1000 to 9990ppm, the resolution is 10ppm, indicated by a blinking ' x10' image. Factory Calibrated: our meters are calibrated with a 342ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver. Recommended for aquariums & aquaculture, horticulture & hydroponics, pools & spas and water cooler professionals. SPECIFICATIONS TDS Range: 0-9990ppm ( mg/ L) Temp. Range: 0-80 degrees Celsius Resolution: 1ppm, 1 degree Celsius Accuracy: + / - 2% ATC: Built-in sensor for Automatic Temperature Compensation of 1 to 50 degrees Celsius ( 33 to 122 degrees Farenheit) Power source: 2 x 1.5V button cell batteries ( included) Battery life: 1000 hours of usage Dimensions: 14 x 2.3 x 1.5 cm ( 5.5 x .9 x .55 inches) Weight: 34g ( 1.2 oz)