The Sentinel is a 24/7 cooling tower maintenance monitor that will display and record system critical values and levels that are vital to cooling tower performance and reliability.

For additional information, visit the Sentinel page on this website.

When values or levels exceed the user adjustable alarm points, the Sentinel will instantaneously provide notification to maintenance personnel.
The standard Sentinel is user configurable and available with any or all of the following sensor inputs: Water Temperature, Walter Pressure, Water Conductivity, Water pH, Water Level, Vibration and Fan Motor Current.  Custom configurations and control options are available on request.

A local display, keypad, and Light Emitting Diodes (LEDs), are provided for use in day-to-day operation. The LEDs are bright to allow a quick “at-a-glance” view of present and past system performance.  The local display and keypad can be used for determining more detailed information such as the current status of all sensors or the time and date of past alarm events.  A PC may be permanently or temporarily connected to up to 16 Sentinels through its communications network for access to data, logs, reports and setpoints.
Remote, off-site access to a local PC is available through a phone line or IP address.  Modbus RTU and BACnet open protocols are also supported with an RS-422/RS-485 interface to access real-time analog, discrete, and state data as well as access to a limited number of control and monitoring setpoints.

Configurations and control options are available to end-users, service centers and private label (OEM) opportunities for manufacturers.

The Sentinel is a UL and cUL listed industrial control panel built to UL508A specifications and is housed in a NEMA 4X housing.

Additional information can be found on the Sentinel web-page under the Commercial Controlssection of this website.

M&M Systems is a UL listed company and an Energy Star Partner.