Call Waterline Controls 1(888) 905-1892

Waterline Controls

Water Level Controls & Sensors

WLC-WS4500 – Fill with Low Alarm (for 5HP or less pumps)

Complete Kit Includes:

  • Sensor With 50 ft. Sensor Wire*
  • Controller
  • Mounting Assembly


  • Fill w/ Low Alarm
  • 2-Contact point system
  • 6-wire Dry contacts to BMS for measuring:
    • Fill “ON” time
    • Low Water Alarm
    • Fault conditions
      • Operates any 5HP pump or less (not supplied in kit)


(coming soon)


The system monitors for a low water level condition and has 3 outputs which will:

  1. Close a set of dry contacts for the BMS
  2. Operate a fill relay rated at 40AMPS for 250VA for up to a 5HP Pump
  3. Operate a low alarm/cut off relay rated at 30AMPS for 250VAC for a booster pump and turn on an LED to indicate the sensor has tripped

The Control Panel has visual displays indicating power to the level control panel, when the control panel is actively filling and the low water alarms. The Fill dry contacts can be used as a comparative to develop a baseline benchmark of water usage for the system.

*Custom Sensors lengths available upon request.

If you are a Reseller, Sales Organization, Distributor, Contractor or an OEM we want to talk with you to determine an SPA price program for your organization so please call us at 1(888) 905-1892 or contact us now.