Home automation has come a long way since the X10 smart home protocol was introduced in 1975. X10 was the first marketed system that used existing power lines to transmit signals controlling lighting and appliances. It is well established and still affordable, despite the newer wireless technologies like ZigBee, Z-Wave, and RadioRA 2.
The smart home concept was once considered to be something only for futuristic films and novels. With the release of X10, however, smart home technology became a real-life option that could be installed in homes with little or no additional wiring. The X10 protocol sends 120 kHz short radio frequency bursts of digital information over your home’s electrical wiring to programmable plugged-in devices or modules. These signals convey your commands to the device, determining how and when it operates.
X10 systems can be used to control a wide variety of lights and appliances with a minimum of fuss and expense. It is possible to create a basic X10 system with just a few modules and a standard lamp control switch or wall switch, and expand it over time as your needs grow. Whether you are looking for a basic way to turn on a lamp or control an entire house, there are many products available to help meet your home automation x10 replacement needs.
There are also a number of ways you can connect your X10 system to the Internet and control it from anywhere with an Internet connection. This is especially attractive if you want to use your smartphone or tablet to control your home automation system. Several web-based solutions exist, including a couple of free open source programs. One option is the popular mocad, which has an official client for X10 called CM15A. Another is the HA-UI, which uses a Linux computer to communicate with mocad and has multiple Vera plug-ins for different configurations.
A drawback to X10 is that it takes roughly three quarters of a second for a transmission to complete, and this delay can be noticeable when controlling two-way switches or using extended command features. This delay can be reduced by using inductive filters to block X10 signals from entering or leaving the local area, but this solution adds cost.
Another limitation is that X10 cannot be used with devices that use triac solid-state outputs, such as LED or CFL bulbs. However, most X10 appliance modules offer a ‘local control’ feature that enables you to operate the power switch on the device itself without using an X10 controller. Some older X10 appliance modules may not have this capability, though, and they might not work with low-wattage lamps or devices such as coffee pots.
Several alternative smart home networking protocols have emerged to challenge X10’s popularity, but the most popular is wireless. Protocols like ZigBee and Z-Wave offer greater reliability than X10, while still being affordable. Regardless of your choice, it is important to understand the limitations of each before selecting a system that will meet your needs.