and no chemicals

A visual "Power Activated" LED light confirms when the dosing system is engaged

Complete replacement set: All essential components in one convenient package

Milwaukee MC110 PRO pH monitor

weight:  149g (including batteries and detachable cover)

Milwaukee MC810US MAX pH/TDS/Temp Monitor nutrient meter and no chemicalsACCURATE. SIMPLE. RELIABLE. 24 7 PH TDS TEMP MONITORING. Why Guard when you can Monitor! The Milwaukee MC810 MAX pH TDS Temp Monitor lets you monitor your pH TDS Temp levels 24 7 automatically. COMMENTS FROM FIELD TESTING "I run this unit 24 7 and have not had any problems for the past two months. I can monitor 24 7, point a camera on it and connect to my phone." "Easy to calibrate." "Using this now, far less expensive than what my friends paid I