UPS Riddle

If you were delivering a package addressed to apartment 4F, and this was what the buzzer looked like, what would you press? That sticker says “3R,” by the way. This is an actual question.

(Sorry, no, this is self-indulgent and will probably make me look like an idiot, so I’ll cut it short here — the answer is 4, but I eventually ran into the UPS guy, who keeps missing me even though I never leave, as he put another “We Missed You” sticker on the front door, and I said, “Ah!” and he said, “Oh, so which is your actual bell?” and I said “4,” and he said, “Oh I’ve been ringing 8.” This might not make any sense, and I guess the main lesson is to make like 3R and get some tape up there. Buzzer stories! Isn’t it sad when you can’t get the makeup you ordered?)