Multiparameter Analyzer (pH/ORP/Conductivity/TDS/C) - Model: MultiCalHandheld is a backlit, graphic LCD that delivers easy-to-read resolution even in low-light environments, and a combination of dedicated and soft buttons makes operation simple. This multiparameter water quality meter is an excellent tool because of its powerful recording capabilities and digital probe. Our provided Multiparameter Analyzer (pH/ORP/Conductivity/TDS/C) - Model: MultiCalHandheld comes as a full system, so you can start taking measurements right away. It is a cost-effective and handy approach to measure many parameters without having to buy multiple meters.