Xpert Alert™ Indoor Alarm System

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When it comes to sump and septic alarm systems, trust the expert! SJE Rhombus® has over 40 years of providing high quality residential alarm systems to users all over the world. With our exceptional customer service and an industry-leading 5-year limited warranty, SJE Rhombus is the leading choice for protecting your home and valuables.

xpert alert features

The Xpert Alert™ indoor alarm system helps protect your home from potentially costly damage due to flooding, pump failure, or freezing pipes. The sleek design of the enclosure, with its unique shape, smooth rounded edges, and large push button with LED light ring, makes this attractive alarm ideal for residential applications. You’ve never seen a tank alarm like this before! Plus, it’s easy to install and to use, so both installers and homeowners have a hassle-free experience.


The best kind of alarm is one you don’t notice until you need it. You can trust the Xpert Alert™ alarm to monitor sump and septic conditions while blending in seamlessly with any decor.


xpert alert red and amber light ring


When the tank level rises, the high water float activates the alarm (audible and visual) to alert you of potentially threatening liquid level conditions. The Xpert Alert™ alarm features an easy-to-see LED alarm light ring that illuminates red for alarm 1 and amber for alarm 2. The alarm horn can be silenced by pressing the large button, but the LED remains on as long as the alarm condition exists. Once the condition is cleared, the alarm automatically resets. A red “Low Temperature” LED activates when the temperature falls below 40°F (4°C) to help protect against freezing pipes; this can be disabled for installations in cold areas.



  • Sleek enclosure design features unique shape with smooth, rounded edges and large push button with LED light ring
  • Compact NEMA 1 enclosure, designed for ease of installation, rated for indoor use
  • Automatic alarm reset
  • (2) sensor inputs to monitor (2) separate liquid level conditions
  • LED alarm light ring alerts you of alarm status; red for alarm 1, amber for alarm 2
  • Audible alarm activates with alarm 1, alarm 2, low temperature and low battery chirp
  • Red LED low temperature indicator activates at 40°F (4°C) to alert you of potential freezing conditions
  • Low temperature alarm may be deactivated when temperature monitoring is not required
  • Green LED power on indicator
  • Alarm horn sounds at 80 decibels at 10 feet
  • Large, easy-to-use test/silence button located conveniently on front of alarm; simply press to test or silence alarm
  • If primary power fails, the alarm system continues to work due to battery backup feature
  • Complete package includes standard SJE MilliAmpMaster™ control switch with 10 feet of cable and mounting clamp
  • Switching mechanism operates on low voltage and is isolated from the power line to reduce the possibility of shock
  • Low battery chirp
  • Includes auxiliary contacts for attachment of remote devices (continues to operate during loss of primary power)
  • Covered terminal block for easy, secure float switch installation
CSA Certified
Five-Year Limited Warranty



  • Primary: 120 VAC, 60 Hz, 5 watts max. (alarm condition)
  • Secondary: 5 VDC
  • 4.5 VDC (3 AA batteries not included)
  • Operates for 24 hrs in alarm condition, one month when no alarm is present
  • 5.5 x 4 x 1.75 inch (14 x 10 x 4.5 cm), NEMA 1 plastic.
  • 80 decibels at 10 feet (3 meters)
  • 6 foot (1.8 meter) MicroUSB
  • For float switch connection only – do not apply power. (Voltage across terminals is 3 VDC).
FLOAT SWITCH: SJE MilliAmpMaster™ control switch with mounting clamp
  • Cable: 10 feet (3 meters), flexible 18 gauge, 2 conductor (UL) SJOW, water-resistant (CPE)
  • Float: 2.74 inch diameter x 4.83 inch long (7.0 cm x 12.3 cm), high impact, corrosion resistant polypropylene housing for use in sewage and water up to 140°F (60°C)
  • Normally open, normally closed (CSA certified)
  • Voltage: ≤ 30 VAC/VDC (Class 2)
  • Current: 1 amp maximum