How is Ultrasound displayed for your field of vision? Do you need an Image link? Is it an overlay or does it replace your normal sight?
What exactly does the rating of the sensor represent in terms of die rolls?
In the Sensor Housings sidebar on pg. 446, "Headware" is listed with a max capacity of 2; how does this work in regards to the cyber Ultrasound Sensor, and what other headware could it be installed in? What is the cost, rating x 100Y (based on Single Sensor)?
Can adepts take it as an Enhanced Sense?
If its a cyberware, you don't need an image link, and it replaces your normal sight. Without cyberware, an ultrasound sensor would overlay your vision with an image link, or you'd have to look at the screen to see what it senses.
Sensor ratings are used as the Limit in 5th edition, so When you roll Perception to see with your ultrasound sensor, you'd roll Perception + Intuition [Sensor].
The Ultrasound Sensor cyberware ignores the Sensor Housings table. In fact, every sensor in the book ignores the Sensor Housings table, unless you build one specifically using that table. It's rather confusing. And yes, you'd pay the cost of a Single Sensor.
Adepts can take any sense granted by cyberware or bioware, provided it does not require wireless or provide a dice pool bonus. Ultrasound has neither, so it should be fair game.