Here's what X10 has to say about the PF284: POWERFLASH Burglar Alarm Interface (PF284)
Connects to an existing burglar alarm system and flashes lights connected to lamp modules and wall switch modules when the alarm trips. Triggered by a contact closure or low voltage input (6-18V AC, DC or audio). Connects to an existing alarm system and turns on lights when the alarm trips.
It has 3 modes of operation:
In Mode 1 the Burglar Alarm Interface will turn ON ALL lamp modules and wall switch modules set to its Housecode and will also turn ON any other modules set to its Unit Code, a stereo connected to an appliance module for example. All lamp modules and wall switch modules are left in the ON state when the alarm is de-activated but the modules set to the same Unit Code as the Burglar Alarm Interface will be turned OFF.
In Mode 2 the Burglar Alarm Interface will FLASH all lights connected to lamp modules or wall switch modules. All lamp and wall switch modules will be left in the ON state when the alarm is de-activated but appliance modules set to the same Housecode as the Burglar Alarm Interface will be turned OFF.
In Mode 3 the Burglar Alarm Interface will turn ON all modules set to the same Housecode and Unit Code as the interface. All modules set to the same Housecode and Unit Code as the Burglar Alarm Interface will be turned OFF when the alarm is de-activated. Mode 3 is the same as mode 1 except that the interface does not send the All Lights On code to turn on ALL lamp modules and wall switch modules set to the same Housecode as the interface.
The interface can be set to be triggered by either a low voltage input (6-18 volts AC, DC or audio) or a dry contact closure. You could also trigger it from an alarm which has an outlet for switching a 120V lamp by using this outlet to control a 120V relay, then use the contacts of the relay to trigger the interface (in the dry contact mode). WARNING - DO NOT CONNECT 120VAC DIRECTLY TO THE INPUT OF THE INTERFACE.
The Burglar Alarm Interface has a test button which allows you to activate it whether or not it is connected to an alarm system. The ALL OFF button allows you to turn off anything which has been turned on by the interface.
APPLICATIONS
Flash all the lights in your home when your existing burglar alarm is
tripped.
· Blast your stereo when your alarm trips.
· Connect the Burglar Alarm Interface directly to a magnetic switch to turn on lights when a door or window opens, i.e. you don't have to own a burglar alarm system.
· Trigger it from sensors such as a photo cell to turn on lights when it gets dark.
· From a motion detector to turn on lights when someone enters a room.
· From a microphone to turn on lights or appliances when a sound from an intruder is detected.
· From a moisture sensor to sound an alarm if your basement is flooded.
· From a garage door opener to turn on lights when you open your garage door, etc.
Some of these applications may require some additional components such as relays, etc. to interface to the Burglar Alarm Interface but virtually anything which gives, or can be made to give, either a contact closure or a low voltage output between 6 and 18 volts AC, DC or audio can be used to trigger the Burglar Alarm Interface
It says nothing about AHP in it.