There are 2 different t91 kits on the site http://www.carsystems.pl :
Audi Telestart T91 KIT
Reception range up to 1.000 meteres. Compatible with Webasto heaters :
Thermo Top E,Thermo Top C, Thermo Top P, Thermo Top V and systems with Timer 1533
and
Audi Telestart T91 KIT
Succesor - 1K0963513A and 4F0909509
Which one works?
Thank you