The Tank Alert Solar alarm from SJE Rhombus warns of potentially threatening liquid levels in water and wastewater applications by utilizing a solar panel with battery backup. It’s a suitable solution for seasonal homes, cabins in remote locations or retrofitting existing systems. The alarm is powered by a rechargeable battery via a 12-volts DC, 10-watt solar panel. Lithium-ion batteries provide backup power. The unit must be installed in a location with adequate sunlight. 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 unit will run for approximately 24 hours. An idle unit without any solar charging will run for approximately five days. 888-342-5753; www.sjerhombus.com.