How to use your Honeywell (ademco) 6270 Keypad to control X10 lights or devices

The 6270 Keypad by Honeywell has a built in X10 switching feature, accessed by the "Lighting" button on the main menu screen.  You need only to replace the standard transformer that powers the alarm panel with a 1361X10N Transformer/X-10 Interface kit.   The kit is actually just another transformer with 5 screw terminal instead of 2.  Simply locate the standard power  transformer, and replace it with the X-10 transformer.  Chances are there will not be enough condutors in the cable connecting you transformer to the panel.  You should run a second cable (such as 22-4) along side the existing cable, if this is the case.  Connect the cables to the new transformer and to the wires from the kit to the 8 pin connector on the panel.  Dont worry about the actual color of the wires connected to transformer.  Just make sure they are connected to the proper color on the 8 pin connector.

X10 was developed in 1975 by Pico Electronics of Glenrothes, Scotland to transmit information over household wiring to control devices in your home.
The most basic system is a remote, and a reciever. The reciever is a small box about the size of an AC power adapter. It has a plug on one end, and has two knobs on it. Turn the knobs to set the codes. The letter sets the house code, while the number sets the device code. For instance you can set a reciever for A1, and plug a lamp into it. The remote has a similar knob on it to set the house code, but has buttons for each device code. Just simply push the button of the device number, number one in this case, and the light comes on!