The SEAV TXS1 is a 1-channel remote that functions on the frequency of 433MHz. With only 1 channel, this remote does exactly what it should do and no more than that. You can operate a single door or gate with this remote, making it ideal for your home situation.
Programming your remote:
Synchronize the DIP-switches in your new remote with the old one. Don't have an old remote? Consult the settings in your receiver.