Signet 9900 SmartPro Multi-Parameter Flow Transmitter Panel Mount Dial-Type pipe-size_5" You can add the Free

You can add the Free Chlorine PPM sensor for Free Chlorine (separate purchase)

and skimmers (freeze ups)

This unique

The Chemtrol 230 is simple and easy-to-use controller

Signet 9900 SmartPro Multi-Parameter Flow Transmitter Panel Mount Dial-Type pipe-size_5" You can add the FreeThe Signet 9900 Transmitter provides a single channel interface for many different parameters including Flow, pH ORP, Conductivity Resistivity, Salinity, Pressure, Temperature, Level and other sensors that output a 4 to 20 mA signal. The 9900 Transmitter (Generation II or newer) has the added capability of supporting the Batch Module for batching control. The highly illuminated display and the extra large (3. 90 x 3. 90 inches) auto sensing backlit