Chemtrol 240 pH Digital Controller monitors_pH/ORP The lettering is 4 inch

The lettering is 4 inch and

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is printed on heavy-duty aluminum material and is designed to inform patrons that there are lifeguards on duty

Chemtrol 240 pH Digital Controller monitors_pH/ORP The lettering is 4 inchThe Chemtrol 240 pH Controller is a microprocessor based digital controller designed to maintain the pH level in water treatment applications. It is particularly adapted to the neutralization of acidic or alkaline solutions for environmental applications. The Chemtrol 240 is ideal for small commercial pools (motels or apartments), condos, and high end residential pools. This unit includes the controller, respective probe (pH probe), paddle wheel flow