JetiBox mini suitable to master basic, master program spin, JETI spin, JETI duplex 2, 4 GHz system. The JETIBOX can be connected to the receiver or the transmitter module for data measurements. A very valuable opportunity offers by JETIBOX at the transmitter module connecting wirelessly read data from the sensors connected to the recipients. Each DUPLEX transfers information about the recipient battery voltage receiver in real time to the transmitter module. It is possible to enable a warning sound fired when waste of voltage below a set value. It is also possible to connect telemetry sensors to each recipient. The Jeti telemetry sensors can be connected directly to the JETIBOX. It can be made sensor from the JETIBOX a volt or an ammeter e.g. by connecting the MUI.