TDS-RO22 In-Line Dual TDS Monitor:
Technical Specification:
Measuring range: 0~1999PPm
Accuracy: ± 2%full scale
Resolution: 1PPm
Display: 4-digital LCD
Double Power Supply: 4× 1.5V (AG13)
220V or 110V AC adaptor
Dimensions: 60× 55× 23(mm)
Weight: 98g