HM Digital TDS-4TM: Pocket-Size Meter with Digital Thermometer

TDS-4TM: Pocket-Size Meter with Digital Thermometer 
Ideal for all water purification applications, wastewater regulation, aquaculture, hydroponics, and colloidal silver. 
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 - 999 ppm, with a resolution of 1ppm. From 1000 to 9990 ppm, the resolution is 10 ppm, indicated by a blinking 'x10' image. 
-Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. -Meters can be recalibrated with a mini-screwdriver. 
-Recommended for aquariums & aquaculture, horticulture & hydroponics, pools & spas and water cooler professionals. 
-Click here to view our aquarium-specific packaging (for model TDS-4TMA). 
SPECIFICATIONS 
-TDS Range: 0-9990 ppm (mg/L) 
-Temp. Range: 0-80 degrees Celsius 
-Resolution: 1 ppm, 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)

500PCS/CTNS  SIZE: 65.5*53*42cm  GW: 45kg