Requirements for IRS-WD1

Is a gateway such as IBS-M2 required to connect an IRS-WD1 to the internet? I haven’t purchased any sensors yet so the IRS-WD1 would probably be my only one. I have two itc-308 wifi controllers that I love. Would like to stay with the Inkbird brand. Thank you!

The IBS-M2 gateway supports connection to the IRS-WD1.