https://bobk77.neocities.org/temp/INV_DonJulio750.png


Sounds like the problem is this: 

"My neighbor’s remote control opens my garage door:"

To fix that, the manual says: 
"Erase the memory from your garage door opener and reprogram the
remote control"

That I can do. 

Do you have a step ladder available to use in the garage?


User Manual / probable
https://cgi.widen.net/view/pdf/ugfiip90zo/114-5851-000.pdf



https://cgi.widen.net/view/pdf/e2bkohzlld/114-5745-000.pdf

https://support.chamberlaingroup.com/s/global-search/%40uri#q=b2405%20manual&t=All


https://www.lowes.com/pd/Chamberlain-CHA-1-2HP-BELT-DRIVE-GDO-WITH-WIFI/5002862169
Chamberlain 1/2 HP myQ Smart Compatible Belt drive Garage Door Opener Wi-Fi Compatibility
Item #3778617 |  Model #B2405