All Swift DNA gates have been tested to a range of greater than 200m line of sight.
In practical use, please be aware that one of your gates will be assigned the job of being a wifi access point for the entire system. It is important to understand that the biggest limitation will be the wifi range of your iPad to this access point gate.
Try and stay within 30m of this gate
The Access point gate will always be assigned as the closest gate to the start (ZERO and MOVE will never be assigned as Access points because they may be sitting on the ground and this is not an optimum location for a WIFI access point).