I know the Honeywell Ademco 6271C keypad has built in x10 switch control, but at the moment I have the Honeywell 6160 keypad only and would like to use the x10 control functions built into the Honeywell Vista 20p alarm panel. Is it possible to use the 6160 keypad to control the x10 switches? I plan to upgrade my alarm system with a 6271C in my bedroom but I would like to go ahead and start using some x10 light switches with my current keypad.

You can control your x10 devices with your honeywell 6160 keypad. First you must program your panel to assign device codes to your x10 devices, then you can use keys sequences to activate or deactivate your x10 devices. You can also use your 6160 keypad to set schedules for x10 switches, such as turning lights on or off automatically on a schedule. See your vista 20p programming guide for directions to program your x10 devices and the vista 20p user guide for directions on setting schedules and manually controlling the switches.

The Vista 20p system was already in the house when I bought it so i dont have any of the ducuments from the alarm system.

Here are the steps for programming the x10 devices for the Honeywell Ademco Vista 15p and VIsta 20p alarm panels:

?79 Menu Mode
(press ?79 while in Programming mode)

ENTER OUTPUT NO.
01-18 = VISTA-20P relays/X-10; 01-08, 17, 18 = VISTA-15P relays/X-10
[?] to continue
OUT NORM LOW (appears only for triggers 17/18)
0 = no (standard default); sets the output level normally high
1 = yes; sets the output normally low (can be used for resetting 4-wire
smoke detectors)
[?] to return to Output Number prompt
OUTPUT TYPE
0 = delete; 1 = relay (skip to “B” prompt); 2 = Powerline Carrier device (skip
to “A” prompt)
[?] to continue.
“A” (if X-10 was selected)
UNIT No.
Enter the unit code (01-16, set at the device).
[?] to return to the Output Number prompt continue
“B” (if relay was selected)
MODULE ADDR
Enter the predefined address for this module (07-15; see Table of Device
Addresses on page 2).
Make sure the module’s DIP switches are set to the selected address.
[?] to continue
REL POSITION (actual relay number on module)
For 4204 modules, relay numbers are 1-4. For 4229 modules, relay
numbers are 1-2.
[?] to return to the Output Number prompt for programming the next device

Here are the steps for turning your x10 switches off and on using an alpha keypad for the Honeywell Ademco vista 15p and vista 20p.

To Activate Devices:
(Security Code)+ [#] + [7] + 2-digit device number
Devices associated with that device number activate.

To Deactivate Devices:
(Security Code)+[#] + [8] + 2-digit device number
Devices associated with that device number deactivate.

Thanks very much!