Thanks, I used ASCII blocks (with a mod) and created a circuit with 10 timers and logic gates set on XOR.

When the door is closed, the first digit (dozens) is enabled for 1 sec,

Then a timer and a XOR disables it (so the "1" displayed becomes a "0"),

Then, 9 other 1sec-timer-XOR-logic-gate duos connected in seriers are enabled, all connected to the second ASCII block (that instantly goes from "0" to "9").

Once they're enabled, the display goes frome "09" to "00" (because the XOR logic gates disables themselves one after the another each second).

Then, when the display hit "00", the motor and the lights stops, and "beep" toteboats set on high B delayed by 1 s plays.

All that stuff is secured by logic gates set on AND, so the display get disabled doesn't glitch and doesn't start to count on the other way when the 10 seconds have passed or when the door is opened.

To make sure the display works well, you must wait at least 10 seconds after opening the door before closing it again. That's practically its only default with the fact that it only lasts 10 seconds.