U.S. Coast Guard Certified Type I Marine Sanitation Device. This treatment device uses no added chemicals, just salt and water or sea water. Self-contained electrodes temporarily converts salt water into a powerful bactericide. Senses and regulates the treatment cycle to automatically compensate for changes in voltage, salinity or water temperature. The LSTMC control allows for adjustable timed toilet flush and simultaneous start of the treatment cycle with most electric toilets by simply pushing one button. The control indicator panel provides diagnostics for fuse, low voltage, and low treatment. Small enough to fit where holding tanks can't. Can be used with manual or electric toilets. Complete Lectra/San MC includes treatment unit, control indicator panel and cable assembly. 12V.