DACE (Dura Access Control Equipment) two button remote is commonly used on DACE gate motors and garage door motors. This remote replaces the older square remote which is no longer manufactured but functionally is the same. Duratronic remotes are self learning with secure rolling code technology. What this means is that each time you trigger your remote a new and randomly selected code is transmitted thus making it impossible for undesirables to duplicate the code on your remote and thus been able to operate your gate. Transmission range is up to 100m dependent on the area in which they are used.