Controls for online educational teams DOGtrace D-Command Control Mini.- DOGtrace Mini Easy (Ref. DGR30). Range 200 m. Mando collar.- only supports DOGtrace Mini 200 (Ref. DGR31). Range 200 m. - Mando DOGtrace Mini 500 (Ref DGR32.). Range of 500 m. - Mando DOGtrace Mini 900 (Ref DGR33.). Reach 900 m. - Mando DOGtrace Mini 1500 (Ref DGR34.). M.Válidos 1500 range exclusively with D-Control Mini DOGtrace line collars.