ECM Jammer will block alarms. Might cause some problems in some heists, only work as a host.
I don't suggest you to use this mod in public lobbies.

In the lastest version of this mod, the alarm will only be DELAYED in the following cases:
Being detected by metal detectors
Being detected by motion detectors
Hang up / Not answer / fail a pager
Break glass with alarm
Being triggered by alarm boxes
WARNING: Achievements will be disabled while the mod is enabled