I could not find any specific name for this feature but what I do understand is that a lot of Receipt printers come with ports for cash drawers, so it is kind of a feature of these printers. For reference you can check the answer on this link
http://www.omniprintinc.com/faqs.html
What is a receipt printer?
A receipt printer is necessary for all point of sale systems. There
are one or two cash drawer ports on the back of your receipt printer
for direct attachment. The receipt printer and cash drawer will share
a single port on your PC. You have several options to choose from when
choosing a pos receipt printer including thermal printers, impact
printers, automatic paper cutters, parallel or serial ports, printer
speed, and printer resolution.
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solved Does every thermal printer has ability to open cash drawer? [closed]