Analog Firewall, DOS Security, Telephone Firewall, Evesdropping Firewall, firewall, analog, analog firewall device, FWA101H, FWA-101H, TSG 5S0204, TSG-5S0204, U.S. Government approved secure telephonic disconnect isolation, disconnect isolator, isolation

PriorityStart [Priority Start] Automatic Battery Protector / Battery Saver - Stops dead batteries! It works as a Battery Isolator or Disconnect Switch. It removes the electrical load at 11.7 Volts