Also suitable as a door opener, great, but not invoiced

Works great.
But you have to connect the receiver first and only then insert the battery in the transmitter!
The have probably made some buyers versa. This is not so much marked in the description,
these are well known, written by technicians for technicians and not for amateurs !!! Myself am technician :-)

After battery insertion can also immediately (within 8 seconds) to enter the first code and confirm by pressing the key button.
If you missed the now going even later.

With me everything has (please read) after menu IMMEDIATELY works.
Also suitable as a home opener. The 1st seconds Relay pulse can switch a door opener. Of course you need for a voltage
for the door opener. They may give it to use the receiver power supply, then you do not need 2 power supplies.

The battery replacement is tricky: Recommendation: Loosen the screw and pull the battery compartment with tape.

Only minus: The seller send Sorry, no STATEMENT (for VAT) with. This is often the case with Amazon MarketPlace the case.
Many sellers send the but of their own accord. Here Mussmann EXTRA REQUEST, and that takes time because you will not find message option on Amazon !!!
For a minus point.