Whats not so great about X-10?
The biggest problem with X-10 is that the protocol is not reliable. What this means is that there is no guarantee that the “ON” command you sent the table light really got there. Sometimes commands get lost, and you never know what happened. If two commands are sent at exactly the same time, they could collide on your power line, and they will not reach their destination. If you have a large home, the X-10 commands transmitted by the computer control module may not be strong enough to reach all your devices. You may have to install an X-10 amplifier to solve this problem.