TDS: 0~1300ppm, 1.30~13.00ppt

Salt: 0~1000ppm; 1.00~12.00ppt

Temperature: 0~90°C

2. Accuracy:  pH:±0.01+1digit;
ORP: ±2+ 1digit;
Conductivity, TDS, Salt: ±2% F.S.;
Temp: ±0.2°C + 1digit

3. Resolution: pH: 0.01;
ORP: 1;
Cond.: 1uS/0.01mS;  TDS: 1ppm/0.01ppt; Salt: 1ppm/0.01ppt;
Temp: 0.1°C

4. ATC: pH: 0~90°C; Cond/TDS/Salt: 0~50°C

5. Power: DC1.5V x 4 battery size: AAA/UM-4