Hi, i come here to tell you, i tried to use the Drawer controller Slave to extand the range for the storage drawer, but i found the bug when i tried to put my items in the Drawer Controller, they didn't go inside the Drawer, like if the slave didn't extand the range for the controller.

I made a little vidéo to show you what i want to say : https://youtu.be/Xtoc_EXhTyg

Sorry bor the bad english i'm french and its not easy for me to be perfectly understandable

Slave does not extend the range of the Drawer Controller. It's just an additional input entry in your network (hopper input for ex.)
Your slave must be within the 12 blocks radius to work as an input. Anything beyond 12 blocks from the Controller won't be recognized.
You want to extend beyond this limit, you will need to add another Controller within the 12 block radius and a slave (optional - just make your input point more convenient).
Let say you have controller #1 at block 0
Controller #2 at block 12
Your chest at block 19
A Slave anywhere between block 1 (after Controller #1) and block 19 (Your chest)

Controller #1 will not reach block 19
But if you use the Slave or Controller #2, it will.

I found out that there is a limit on how many controller you can use to extend the range.
Controller #1 will talk to Controller #2 (if places within 12 block) and will reach block 24.
Even if you place a third controller at block 24, controller #1 will not reach chest at block 25

So max range from controller #1 will be 24 blocks

You should do some trial and error to see what I mean