I didn't think I had the Quad ....but there is no where in the box or manual that states the name and number of the standard transducer, just that the Quald is optional....the manual doesn't do a good job in stating the specifics of all the units it covers in my opinion.
Sorry about the pictures....I had separate photos but something got screw up in the down loading. When I clicked on more attachments it didn't actually give me them, just a repeat of two.