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Fire Protection
Water Tank Level Controls

When Reliability Counts

(Products listed for this category are below)

Well Water Holding TanksWe make custom Fire Protection System controls as needed to meet codes for local municipalities. We have worked directly with Fire Marshalls for the cities of Los Angeles and Seattle. The WLC Series Building Fire Systems models may look like the competition but the unit is revolutionary in its design. The WLC Series is perfect in any application where water level management is important. Its use of a microprocessor monitors all its probes for correct operation and then provides outputs to drive the power relays, the Building Automation System and a visual output of the operational status. Using a very low voltage and current prevents WLC Series sensors from fouling or degrading

In this application there may be several NEMA ratings needed depending upon the location of the product in the application. For the hazardous area rating, the equipment must meet the requirements for the specific area classification it will be installed in and is typically listed (UL or ETL), approved (FM), or rated by some other third party national recognized testing laboratory (NRTL) for the hazardous area classification. All of the organizations above are considered part of the NRTL and the certification to these hazardous location standards can come from any one of them.

All of Waterline Controls’ models easily and quickly integrate with existing building automation systems. This allows the building operator to easily monitor and manage fire system holding tanks and to replenish, empty and refill the system or circulate as needed with the least amount of effort. Every unit we offer comes with a 5 Year Limited Warranty for your benefit.

Additional Information

Enclosure: 8-3/4” X 10-1/2” X 6” including the hinge and the latch. For indoor and outdoor use.

Sensor assembly: 3” diameter and 20” long.

Electrical: Controls operate at 0.5AMPS at 110VAC Internal Relay Contacts rated 30AMPS at 250Volts Dry Contacts for BMS are rated 0.5AMPS at 60Volts.

The Sensor is Intrinsically Safe.

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 1 reviews
Really Like It

Thanks for checking on our latest purchase. We actually just installed this last week and it works perfectly! Nice piece. Really like it. They need to run Power to the heater yet, but I dry ran everything and it all worked flawlessly!
All of the customers that I have installed your product on have no complaints and there problems went away.
Thank you very much and I will be continuing to push your product.

Category Products
WLI Water level indicator


Level Indicator used to show the level of water

FPT50 Controller


  • Redundant Design for Safety
  • 10-wire Dry contacts to BMS with Redundant Systems for measuring:
    • Fill Level 1
    • Fill Level 2
    • Low Water Alarm
    • High Water Alarm
    • Fault conditions
FPT50 Controller

Complete Kit Includes:

  • Dry contacts to BMS for measuring Fill "ON" time
  • Low Water Alarm
  • High Water Alarm
  • Fault conditions
  • Operates 110VAC Solenoid Valve
  • Two 110VAC 95db Audible Alarm w/ Silencer Switches Installed in the Panel