Standard EDC-19A DC Cable Model: EDC-19A UPC: 788026095445 12v DC powercord with cgarette lighter plug on one end. Use this with HX270S, HX370S, HX500S, HX600S, HX471S, HX370SAS, HX500SBLI,...
30 Watt 4Ohm speaker horn. Use this with any standard radio that has a built in hailer 20watts or less in power. If the hailer has listen feature this 4 Omh speaker will perform the listen feature.