They hid mine very well - My M60 is bloody small... had to go on a bit of a mission to find it as i needed to turn the senitivity down... didn't want the M80 only coz it has shock sensors that i hate - people break thru windows, not thru panel steel, mine has window sensors only + the usual bonnet, boot, doors and dual immobilzer..
You can't adjust the M60 at the Module, maybe you found the glass break sensor? It is quite small ???
Mongoose M60 is huge next to the Cobra 8509
Mongoose M60 on the right next to an Autowatch 446RLi
Be warned: The M80 is bigger than the M60! ;D