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It is a surprise to many that a door chime could be so effective in alerting an entire house of a guest. There are many door chimes articles that actually detail this issue. A typical doorbell will only have a specific number of sounds that it can make. Old fashioned products will make a bell sound or a buzzer noise. While these two sounds have been phased out over the last few years, there are still many homes that employ this older technology. More modern products produce a chime sound.

The chime doorbell is a complex mechanism. It uses an special electromagnet in its processes. This electromagnet is called a solenoid, which is simply an electromagnet with different properties. The difference is that a solenoid has a coiled wire that is used to surround a metal piston in the doorbell. The reason this works is primarily due to the magnetically conductive metal that is contained within the piston. Because of the electromagnetic field, the piston can be moved back and forth without much effort. Once the doorbell is pressed, the piston moves to the right, and hits a tone bar. This makes a “ding” sound.

Once the doorbell button is released, the electromagnet is no longer magnetized and the piston returns from the right side. Due to the momentum from the release, the piston hits the left tone bar and makes the “dong” sound. This is why a majority of door chimes will make a “ding-dong” noise.

It is possible to make more elaborate sounds by including more solenoids and tone bars, but for the typical household this is not necessary. A simple doorbell with a chime is considered more than enough for most households, but for those who want a little extra with their products, there possibility is there for you to insert additional sounds.