I believe the airspeed comes in an analog and digital version. Just make sure it’s the digital version. I usually get them online from eBay, GoodLuckBuy or HobbyKing Airspeed Sensor etc. They don’t seem to have a brand name, just generic devices. When using an Air Speed sensor it’s critical to do a ‘preflight calibration’ each time you fly with your hand cupping over the air speed sensor but not touching it.
Using an airspeed sensor on a quadplane does create an issue of how to place it given you don’t want the vertical props to influence it. I had the following Airspeed Sensor Mount 3D printed for my build.