Use steps:
1. Please unplug the electrode protective sleeve before use
2. Press the switch, place the electrode into the test solution
3. After the numerically stable, press the HOLD button and take it out of the solution to read.
4. After reading ,turn off the meter ,wipe clean the electrode before sleeving it.
 
Instrument features:
1. Lock Function: easy to read and record, the instrument will lock the reading
2. 5-minute auto shut off feature, battery won't run off
3.Measurement Range: Conductivity: 0 -- 9990us/cm
                         TDS: 0 -- 9999ppm
                          Degrees Celsius: 0 .1 -- 80 .0ºC ,F: 32 .0 -- 176 .0 ° F 
4. Accuracy: ± 2%  
5. N.W.: 55g
6. Size: 154*30*14(mm)
Shift between TDS & Conductivity:
The factory default TDS data, if the conductivity data of the solution is needed , please touch the SHIFT button, the instrument automatically shifted
 
Automatic temperature compensation:
The instrument with automatic temperature compensation function under measurement mode.
 
Temperature shift:
Continuous touch the SHIFT button twice, degrees Celsius and degrees Fahrenheit conversed, the factory default degrees Celsius
 
Maintenance:
Keep the electrode clean, cover the electrode protective sleeve, please take out the batteries for long periods idle.  
 
Warranty:
Product warranty life time from the date of purchase
The following situations are not in the range of warranty, damage caused by misemploy (battery leakage, water into circuit boards etc.) physical abuse, the label tore
 
Note:
1. The instrument is a professional instrument, please under professionals instructions in order to avoid instrument failure
2. Avoid heat, direct sunlight
3.Please adopting standard buffer solution calibration, incorrect calibration would cause measurement error, thus affecting the accuracy of the test solution, or cause the instrument not working properly.
4 . Do not thrown the instrument into the test solution to  
avoid the circuit board short circuit.