You can connect the stylus to the iPad Air 2024 by attaching it magnetically to the side of the iPad. The magnetic attachment activates the connection automatically if the iPad supports this function. The stylus is specially designed for Apple iPads from 2018 onwards and uses this magnetic coupling for easy connection.
If the stylus does not respond immediately, make sure it is charged (via USB-C) and switch it on by double-tapping the top if necessary. The connection is then established via Bluetooth without the need for separate pairing in the iPad settings.
The digital stylus from ESR is specially designed for Apple iPads and supports tilt detection and a fine tip. It is not designed for Dell laptops, as these usually require other active pens with specific technology (e.g. Dell Active Pen with AES or EMR). Therefore, using the ESR pen on a Dell laptop is generally not compatible. Dell laptops usually require specially compatible pens, which are listed in the Dell compatibility list.
The "Digital Stylus for iPad" from ESR is compatible with iPads released in 2018 or later. Since your iPad 9 (2021, model A2602) meets this condition, this stylus should be compatible with your device.
Should be compatible via Bluetooth - the pen does not connect automatically like the Apple Pen, for example.
With the iPad Pro everything works without problems