What sort of X10 transmitters exist?
The simplest X10 transmitter is a small control box with buttons. The buttons select which unit is to be controlled, and which control function is to be sent to the selected units (e.g. “turn on”, “all units off”, etc). There are also clock timer transmitters which can be programmed to send X10 commands at certain times. Some of these can be programmed with buttons on the timer; some must be connected to a computer to select the times. There are other special purpose transmitters that send certain X10 commands at sunup or sundown, upon detecting movement, or as commanded by tones over a telephone. This is not an all inclusive list, and more detail on specific transmitters is given in Section 2.
