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AquaLynx® 400 LX

The RODI Systems AquaLynx® Model 400 LX is a complete monitoring and control system designed specifically for commercial and industrial water treatment applications. It is a unique multi-parameter control unit capable of monitoring and controlling virtually any water treatment application.

The AL400 LX is available in multiple variants, each with different combinations of conductivity, pH, ORP, flow (sinking pulse), and analog (4-20 mA) inputs. In addition, the AL400 LX is uniquely equipped with a programmable controller which can be programmed in ladder logic. This, along with the assortment of multi-parameter input options, allows the AL400 LX to be customized for virtually any water treatment application.


Discrete Inputs Eight Isolated, 24 VDC
Discrete Outputs Eight Form C Relays, 2 Amps @ 250 VAC / 30 VDC
Flow Inputs Three, Sinking Pulse, 24 VDC, Limited to 100 mA
Sensor Input Variants Two conductivity with temperature compensation, two pH/ORP with temperature compensation, one conductivity and one pH/ORP, or all 4-20 ma analog inputs
Serial Ports One Isolated RS232/485 Serial Port with Modbus RTU or A-B DF1 Slave
User Interface 4.3" Color Touchscreen with Backlight
Power 100-240 VAC, 50/60 Hz, 1 Amp
Enclosure NEMA 4X Polycarbonate
Mounting Wall Mount
Dimensions 16.38” high x 10.88” wide x 8.50” deep
I/O Connections All connections via screw terminals or spring terminals.
Environment 0° to 55° C (32° to 131° F), 10 to 95% relative humidity, non-condensing
Certifications Meets UL 508A Standards.
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  • Reverse Osmosis
  • Remote Monitoring
  • Chemical Feed
  • Cooling Towers
  • Disinfection
  • Ultrafiltration