Compact 1x1 loader requiring electricity to run. There are options to enable or modify capabilities like stacking, disable power consumption, or recipe cost.
Yeah. That is a game engine thing. It may be worth an enhancement request to ask that in addition to Read Transfers, loaders also be granted a Read Contents (hold) of the integrated belt.
As a work around, you can read the contents of an attached belt and select Hold (all betls). The image has an example.