The CheckPoint™ Water Level Control For Program Logic Control (PLC) is a pre-set liquid level controller and sensor combination that can operate up to four different set points depending upon its configuration from the factory. The CheckPoint Series is the low cost water level control for the budget minded, in any application where water level management is important. A ‘set-it and forget-it’ automatic and cost effective, low space, liquid level controller. The CheckPoint is only available to approved OEM’s and 508a shops. Contact us directly for approval.


It is revolutionary in its design and specifically for use with a Program Logic Control (PLC) to replace float switches. While it employs the same technology as the other two packages from Waterline Controls™ it does not have any outputs the user can identify with or see without applying a voltmeter. Those output interfaces are completed when the unit is wired into a Program Logic Control (PLC) or directly into a building management system (BMS). CheckPoint uses pre-set firmware to operate an onboard microprocessor that monitors all probe sequences for correct operation and then provides the corresponding outputs to the PLC.


The CheckPoint is perfect in any application where float switches are an issue and you don’t have a big budget or you are just tired of continuously needing to replace them- this product solves that issue. The price point here is comparable to those float switch costs but the long term reliability will be far different. CheckPoint uses pre-set firmware (software) to operate an onboard microprocessor that monitors all probes so they operate correctly and will not foul, plate or deteriorate over their life time. Call us today and let us help you with your application.

All the sensor rods are color coded to make it easy to assemble. The color of the sensor rods corresponds to the output color. The rod lengths can be varied by adding lengths to the ends with our extension kits or by cutting the rods to length in the field. The sensor head is a 3” PVC plug that fits into a 3” slip style coupler for easy mounting and installation. The cord length is standard 5 ft. but can be custom ordered in any length. We can make Checkpoint with different input and output voltages for any application from 5vdc, 12vdc or 24vdc. The output voltage will be the same as the input voltage. Call or email us today to see how we can help you apply Checkpoint to your application needs.


All of our liquid level controls and liquid level sensors are assembled right here in the U.S.A.
where we monitor every step of the process.


We offer products comparable to the products offered by the above companies. See our website pages for further information on the products. The tradenames and trademarks in this page are owned by their respective companies or are the same name as the company. They are mentioned for comparison purposes only. They are in no way affiliated with System Dynamics, Inc or WaterLine Controls.