5 in 1 ec tds salt sg temp meter 

5-in-1 Spoon Water Quality Tester Home EC.TDS. SALT S.G Temp Water Purifier Tester with Bluetooth Option
Specification
Range:
EC: 0-19900us /cm , 0-199.0 ms/cm
TDS: 0-19900ppm , 0-199.0ppt
SALT: 0-199.0ppt , 0%-20%
S.G: 0.990-1.400
Temp: 0°C-50°C
Resolution:
EC: 1us/cm(19g9us/cm) , 10us/cm(1999us / cm)
0.1ms/cm
TDS: 1ppm(1999 ppm) , 10ppm(1999ppm) , 0.1ppt
SALT: 1ppm(1999ppm) , 10ppm(1999ppm) , 0.1ppt , 0.01%
S.G: 0.001
Temp: 0.1°C (0.2 ° F)
Accuracy:
EC、 TDS、 SALT: +2%F.S
Temp: ‡1.0°C
Battery: 4X1.5V (AG-13) （ not included)
Temperature Compensation: 0°C-50°C
Operating Temperature: 0°C-50 °C
Dimensions: 235mmX45mm ×45mm