iSmart Motion Sensor
Crutchfield Customer Review (What's this?)
One of the guys comes always with the package but this is definitely a good addition to the setup if you want another sensitive spot of the house to have the double protection, especially for the ground level areas of your property - works great, tested it with my wife and it delivers exactly what I was looking for. Super easy to install, you can either screw it to the wall (all necessary stuff comes with it in the box) or you can use the adhesive tape (they also include that) - works on 3x AA standard batteries, which makes the entire sensor quite heavy and feels like the adhesive may not hold it but once on the wall the tape holds super well. Overall amazing system for amazing price, exactly what I was looking for to give me a peace without 3rd parties.
Pros: Easy to set up, inexpensive, no drilling walls required as it comes with the adhesive tape that does the same trick without drilling holes in the wall
Cons: Quite heavy with 3x AA batteries inside, hopefully the factory included adhesive will last ages holding it on the surface