After that he was able to experiment on the alarm at will. Removing the faceplate was simple; he could snap it off with the end of a screwdriver. Inside the casing, there were only four wires, two red and two blue. He tried detaching the wires individually; the alarm went off every time. He tried detaching them all at once; the alarm went off. He tried detaching one red one and one blue one at the same time; the alarm went off. He tried detaching the two blue wires; the alarm went off. He tried detaching the two red wires; instead of causing the alarm to go off, three of the keys on the keypad lit up for twenty seconds and then the alarm went off. He reattached the red wires and reset the alarm. He detached them again. This time, when the three keys lit up on the keypad, he depressed them