This 5 volt charger allows you to charge your Educator remote dog trainer, models ET-800, ET-802, K9-800, K9-802, UL-1200, UL-1202, WF-1200, WF-1202. Two leads allow simultaneous charging of transmitter and receiver. Note: 2-dog systems require model SPLITTER-002 splitter cable in order to charge both collars plus transmitter at the same time.