Two way modules would respond to a status request.
They are both plug in modules. LM14A Lamp, AM14A and AM15A Appliance.
They may report being turned on by a local control sensing event.
I have not seen LM14A Lamp, AM14A {Two Pin} or AM15A {Three Pin} Appliance modules being sold in a long time.
Same for the X10Pro PAM21 {Two Pin} or PAM22 {Three Pin} two way appliance modules.
One thing to watch is the ratings of the X10 relay type appliance modules.
They maybe rated at 15 amps but that is for resistive loads.
I have a AM14A and it is 15 amps resistive.
Motor load 1/3 HP.
Incadescent Lights 400 watts
TV 400 watts.
Maybe you could get a switch that has status reporting like an Icon Relay Switch and it would send an X10 signal to your automation controller and a XPFM fixture module or a XPS3 20 amp wall switch using an X10Pro PTB01 bracket to mount it inside the old timers electrical box.
http://www.x10pro.com/pro/catalog/specialtypool.html#ptb01