Giant ridesense.... Garmin 705

What do I need to link in?

I have a giant ridesense sensor, giant speed sensor + cadence magnets, will this connect with a ant+ dongle to Zwift?

The ridesense connects with my garmin 705. Can I connect through the garmin 705? 

I’m using a MAC computer 

You will need an ANT+ usb2 or usb-m dongle to plug into your Mac.  This will receive the information from your giant speed/cadence sensor.    For more information, check our getting started guide here:  http://www.zwift.com/getting-started