SJE-Rhombus SES Controls Tank Alert Alarms

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Tank Alert® Solar

Solar Powered Indoor/Outdoor Alarm System

The innovative Tank Alert® Solar alarm warns of potentially threatening liquid levels in water and wastewater applications by utilizing a solar panel with battery backup for easy installation and operation. It's a simple, ideal solution for seasonal homes, cabins in remote locations, or for retrofitting existing systems.

The Tank Alert® Solarm alarm is powered by a rechargeable battery via 12 VDC, 10 watt solar panel. Lithium Ion batteries provide backup power. The unit must be installed in a location with adequate sunlight for solar charging. When an alarm condition occurs, the beacon will illuminate and the horn will activate. The horn can be silenced with the test/silence push button. Once the condition is cleared, the alarm will automatically reset. In full alarm, the unite will run for approximately 24 hours. Idle unit without any solar charging will run for approximately 5 days.


Tank Alert® Solar


  • Enclosure meets NEMA 4X standard
  • Alarm is powered by rechargeable battery via 12 VDC, 10 watt solar panel (includes mounting bracket and 10 feet (3 meters) of 18/2 cable)
  • (2) liquid-tight round cable connectors (RCC-8)
  • Main power on/off switch
  • Green power on LED indicatior
  • Amber battery charging LED indicator
  • Red reverse battery polarity LED indicator
  • Alarm will operate for up to 72 hours with no sun if not in alarm
  • Alarm will operate for up to 24 hours with no sun if in alarm
  • Automatic alarm reset, test/silence push button switch
  • Alarm horn sounds at 85 decibels at 10 feet (3 meters)
  • Integral mounting tabs for easy installation
  • Integral padlockable latch for added safety
  • Complete package includes standard SJE SignalMaster® control switch with 20 feet (6.09 meters) of cable and mounting clamp. Other lengths and floats switches available. See control switch section of the catalog.


  • Alternate float switch models for high or low liquid level warning

Two-year limited warranty on alarm package (including float and solar panel)

One-year limited warranty on the Lithium-Ion batteries



Tank Alert® Solar


12 VDC (solar panel)
8 x 6 x 4 inch (20.32 x 15.24 x 10.16 cm), indoor-outdoor, weatherproof, thermoplastic meets NEMA 4X water-tight standard
85 decibels at 10 feet (3 meters), meets NEMA 4X water-tight standard as installed by factory
Meets NEMA 4X water-tight standard as installed by factory
Certified to IP66 and IP68 standards
FLOAT SWITCH: SJE SignalMaster® control switch with mounting clamp
Cable: 20 feet (6.096 meters), flexible 18 gauge, 2 conductor (UL) SJOW, water-resistant (CPE) 
Float: 2.74 inch diameter x 4.83 inch long (7 x 12.3 cm), high impact, corrosion resistant polypropylene housing for use in sewage and non-potable water up to 140oF (60oC)
SOLAR PANEL DIMENSIONS: 14.06 x 11.89 x 1.18 in (35.71 x 30.20 x 3 cm)
BATTERIES: 3.7 VDC, Lithium-Ion rechargeable
Size: 18650, 3000mAh, No-PTC

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