On device creation page, you can select the manufacturer “Sensing Labs” and the Model “Generic Senlab™ – class A” (that means SF12 by default with datarate range [DR0-DR5])

•  We recommend to use OTAA activation mode. DevEUI, AppEUI and AppKey are provided in the csv file “commissioned_devices.csv“.
• If you want to use ABP activation mode, you have to be sure that the DevAdress is unique into your network.
• After some messages transmission with good radio levels, the network server can automatically ask the device to switch to a lower SF