If you're going to include the one from HobbyKing (didn't know about that one until your listing), then the micro altitude sensor from Eagle Tree Systems, which can also function as a standalone device given some power - like the HK unit - ought to be added. https://www.eagletreesystems.com/index.php?route=product/product&path=64&product_id=60
I have actually flown this as a rocket altimeter on a few occasions before getting some rocket-specific units and still have one in one of my field boxes.
I have actually flown this as a rocket altimeter on a few occasions before getting some rocket-specific units and still have one in one of my field boxes.
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