The SEAV BeHappy S1 is a 1-channel remote that functions on the frequency of 433MHz. It can easily be attached to your keychain thanks to its small size. Aside from that, you can select two different colors (blue or black), which is convenient if you have multiple people using their own remotes.
Important to know: This remote is secured by DIP-switches and works with fixed code technology. Its RS1 counterpart works with a rolling code. These remotes are not compatible with each other and don't communicate with the same receivers.
Programming your remote:
Synchronize the DIP-switches in your new remote with the settings in the old one. Don't have an old remote? Consult the settings in your receiver.