HUF - 433MHz

E82/E88 128/135/M 09/10-,
E9x 323/328/335/M3 09/09-,
F07 535/550 -03/14,
F10 528/535/550/M5/Hybrid 5 -03/14,
F06/F12/F13 640/650/M6 -03/14,
F01/F02 740/750/760/B7/Hybrid 7 -03/14,
E70/E71 10/10-,  E84/F25/F26/E89 -03/14 

(Tire Pressure Sensor)

OE style sensor activates as soon as tire is filled with air.

Sensor communicates with onboard computer and sets itself during test drive.