DOGtrace line controls D-Control educational teams.- Mando DOGtrace 200 Easy (Ref. DGR20). Range 200 m. Mando collar.- only supports DOGtrace 400 (Ref. DGR21). range of 250 m. - DOGtrace 600 command (Ref DGR22.). Range of 600 m. - DOGtrace 1000 command (Ref DGR23.). 1000 m range. - DOGtrace 1600 command (Ref DGR24.). M.Válidos reach 1600 exclusively with the D-Control DOGtrace line of collars.