need reliable sensors.

I ordered  some sensors, most of which i am having problems figuring out for to use. The only one I ordered that I totally understand and have tested it and works is the tilt sensor. I am not sure what brand it is but its a small clear rectangular box. Another sensor I bought was a glass sensor which i got from Asianwolf. I cant get that thing to work correctly. Another one I got from asianwolf was their dual stage microwave sensor. No matter how I set it, the green led always blinks, no matter if its set to max or min sensitivity. The last sensor I ordered was an ultrasonic air pressure sensor. Heres a picture of that sensor:

All of my testing has been done without connecting the trigger wire, but rather just focusing on when their led's flash. I wanted to know what are the most reliable and easiest sensor's and brands to set up. I want to have either a glass break sensor or microwave, but both if I could. The air pressure sensor would basically be for my trunk. I just want sensors that are wired up and easy to adjust. Any ideas?

Does anyone know any brands and model numbers of sensors that are very easy to install/adjust? Ill give you an example: If I was to get a glass sensor, I would install it and simply adjust it by hitting something on the windshield and adjust as so. The glass sensor I bought is made by scytek. It has a red LED that is lit only when the sensor is triggered. What I did was hook the power and ground wires to the battery. I left the trigger input alone. I set the sensitivity to max and hit a wrench on the glass. The LED didnt light up at all. I have to hit the glass a certain way plus have the sensor right next to the impact point in order for the LED to blink and even that doesnt happen all the time. My microwave sensor is also a Scytek. It is a dual stage inerior/exterior one. First off the little red and green turn knobs broke so now I have to use a tiny screwdriverto turn them. Anyways, when I tested this sensor, I hooked it up the same way as the other one. I left both trigger wires alone. When I tested it, the green LED would constantly flash. I went and turned both sensitivities down to minimal and the green LED still flashed. Then I would walk away (about 20 feet) only to see the light still flashing. Also, no matter what I do, I cant seem to get the red LED to light up at all. Even when I touch the trigger to a ground (battery's) it doesnt light up.

I simply want a very easy and reliable sensor that once installed can be adjusted simply by walking by the car or hitting the glass.  The shock sensor that came with my car is very easy to adjust. I simply turn the knob to where I think it should be, arm my car, and hit the car. If the alarm doesnt chirp, then I need to turn it up more. But these sensors I just mentioned for some reason arent working that way.

I've never used a glass sensor in my life....never had a request, or the want to have one on my own vehicle. I have used multiple microwave sensors before, and can tell you , they get old quickly....especially if you have any cats, or trees around your car. The DEI 508d worked alright, and was fairly easy to adjust....but sensitivity will vary depending on weather conditions ,but I removed it do to the reasons above. I think i'm gonna put it back in, but use it to trigger my window mods.....DEI also has a glass breakage sensor you might wanna try. Both sensors are in the link below. IMO....if you have your shock sensor set correctly, and have all entry points protected.....there really isn't a need for either.

http://www.sonicelectrnix.com/cat_i511_sensors--triggers--and-relays.html

First......get the shock sensor working correctly..you might have to relocate it. You might have to buy a new one, but that should be the center point of the security system. Then, if you want extra sensors, i would check that link I gave you.