Ring Video Doorbell 3 Wired Directly To A 30VA - 16VAC Transformer (NO EXISTING DOOR CHIME)

I am installing a Ring video doorbell 3. This doorbell will be wired directly to a 30VA - 16VAC transformer. There is no existing doorbell chime. So the power will come from the transformer straight to the Ring video doorbell 3. Do I need to install a Ring Wirewound Resistor for this type of install? I can not get a straight answer. Some say a wirewound resistor is required for the Ring video doorbell 3 and others say that the RIng video doorbell 3 is built so that no wirewound resistor is needed to directly wire it to a transformer. Can someone give the correct answer?