WEBASTO HEATING DIAGNOSTIC KIT (TESTER) for USB/serial port, you can buy harnesses separately for AirTop2000STC, AirTop Eco 40/55, Thermo Top C/E, Thermo Pro 50 Eco, Thermo Top Evo, Thermo Pro 90, DBW 2010/2016, Thermo 230/300/350, Thermo S 230/300/350/400
