Confuse – DontSpy 2 - detector Review

I tried and I was very sceptic minutes later it showed something in the wall I tried to figure out but I could not see anything could be something behind the wall I mean who would instal a device behind walls and then showed and point the smoke detector I was freaking but I could not see anything either and finally 2 more at the vents of air conditioning really I am going to have to open those vents see what it could be but so far no cameras o any other device what you think
Review by juan del campi on DontSpy 2 - detector.