![I always see these numbers and letters on Amazon boxes, but what do these numbers and letters really mean? : r/whatisthisthing I always see these numbers and letters on Amazon boxes, but what do these numbers and letters really mean? : r/whatisthisthing](https://preview.redd.it/err2n55kwq951.jpg?auto=webp&s=f67a0a760298d5e3aeb12591e4f360fb9f7fbd76)
I always see these numbers and letters on Amazon boxes, but what do these numbers and letters really mean? : r/whatisthisthing
![AMAZON Shipping Package Parcel Cardboard Box. Amazon is an American Multinational Technology Company of e-commerce Stock Photo - Alamy AMAZON Shipping Package Parcel Cardboard Box. Amazon is an American Multinational Technology Company of e-commerce Stock Photo - Alamy](https://c8.alamy.com/zooms/6/b1de290419924684bc1885ae668ce4f8/hydw7t.jpg)
AMAZON Shipping Package Parcel Cardboard Box. Amazon is an American Multinational Technology Company of e-commerce Stock Photo - Alamy
![RPN-1A5-A230 RELPOL - Module: current monitoring relay | AC current; 230VAC; DIN; SPDT | TME - Electronic components RPN-1A5-A230 RELPOL - Module: current monitoring relay | AC current; 230VAC; DIN; SPDT | TME - Electronic components](https://ce8dc832c.cloudimg.io/v7/_cdn_/11/C3/B0/00/0/736273_1.jpg?width=640&height=480&wat=1&wat_url=_tme-wrk_%2Ftme_new.png&wat_scale=100p&ci_sign=ce4a4b77e1cc87cd9ac3817d0aa361882173a155)
RPN-1A5-A230 RELPOL - Module: current monitoring relay | AC current; 230VAC; DIN; SPDT | TME - Electronic components
![Amazon on Twitter: "@jpmarth Congratulations! We see you're already doing an excellent job of dividing your time between your child and pup. 👶🐕💙" / Twitter Amazon on Twitter: "@jpmarth Congratulations! We see you're already doing an excellent job of dividing your time between your child and pup. 👶🐕💙" / Twitter](https://pbs.twimg.com/media/DhwwixRV4AEa5JI.jpg)