The RTR-57U can collect data from any RTR-51,52,53 and RVR-52A unit as well as from any TR-5 or TR-7 Series unit. Data downloading can be carried out with any RTR unit via wireless communication or by simply placing the unit front down on the communication pad area as done with the TR-5 series units. Data from other types of units can be downloaded via the provided communication cable connection.