Das Mikro Robitronic Compatible Lap Counter System USB (Universal Serial Bus) Set Description: This is an Robitronic Compatible Lap Counter System. It is a reasonably priced lap-counting-system for RC-cars of all scales. It has been especially developed & is applicable for use in mini-RC-cars of 1:18, 1:20 & 1:27 (Mini-Z) scale. Features Lap-counting-system for RC-models of all scales Suitable for in- & outdoor tracks Any number of vehicles can be counted at the same time Personal transponder with unique ID number Extremely small & lightweight transponder (12x 16x 5mm @ 3g) Direct USB (Universal Serial Bus) port connection (Integrated USB (Universal Serial Bus) to Serial Converter) Software for all common Windows operating systems Package Included:4 x receiver modules 3 x personal transponders 1 x PC interface box 1 x long data cable 3 x shot data cable 1 x USB (Universal Serial Bus) disk (RCM & Zround software, Driver)1 x power adapter