it is like using a newly opened bottle of solution

Quick Connect Din Connector

✅ Reduces waste: Precise quantities minimize excess reagent usage

2 × AA alkaline batteries

HM Digital PSC-154 TDS/EC Controller – 4-20mA Output, Commercial Grade 800 ppm TDS calibration it is like using aHM Digital PSC 154 TDS EC Controller Commercial Grade Water Quality Control with 4 20mA Output The HM Digital PSC 154 is a professional grade inline TDS EC controller engineered for high output commercial and industrial water treatment systems. It continuously monitors total dissolved solids (TDS) and electrical conductivity (EC), triggers an audible alarm when levels exceed your set point, and outputs a 4 20mA signal for direct integration with PLCs