The product has little compatibility with devices and has worked for a week (I'm not the only one in this case). The vendor is in bad faith and not to assume the cost of return. We only have 7 days to return the product and pay the return is outrageous. The guarantee is never marked on the product of this seller. Ditto for his CGV, which are different from those of Amazon, which shows particularly bad faith.
Edit. I just bought 2 infrared transmitters using radio waves, another brand from another vendor, all works perfectly.
