Radio Shack sells about 5 different types of buzzers. The buzzer really got on my nerves so I bought the chime. Here's a pic of each one. The chime has three wires. Blue/Black/Red. If you look at the wiring diagram on the back of the package the blue and black should be wired together. The buzzer is $2.99, the chime is $6.99. The buzzer is 76 dB and the chime is 75 dB.





I found this picture on HT that shows how to wire it up.




Heres a audio clip of the chime I installed.

Right click and choose "save target as"

http://www.geocities.com/dwnthehatch/mov00438.mpg