This extension control unit from Panasonic is a great choice. Note that it doesn't come with a connection cable.

Using this Panasonic AG - EC4G extension control unit is easy. Just connect it to your relevant device. Remember, since it doesn't include a connection cable, you need to prepare one that fits. When using, keep it in a dry and cool place. To maintain it, clean it regularly with a soft, dry cloth. Avoid exposing it to water or high - humidity environments, as this may damage the unit.