This information comes from Marco de Goede (goede@dds.nl) in Holland and I have never done it myself. He probably just applied my general modification rules.

Change C1 from 0.68uF/250V to 0.33uF/400V. Change R1 from 100Ohm/0.5W to 220Ohm/1W. Change R2 from 330K/0.25W to 330k/0.5W. Change the 130V MOV to a 250V MOV. Use adaptors for the connectors on the input and on the output.

Comments from Hans:

I think that you should also change R5, the other 330k resistor and R10 a 100k resistor going to the triac to 1/2W if they are 1/4W. Also, as far as I know, these modules use a triac called BTA10-400CW which is a 400V version. This is quite OK for 220 but very close to the limit if you have 240V (340V peak/peak). If you have 240V, it would be safer to use a 600V triac. But in a "clean" environment it would probably work.

Triac short form data:

Type     BTA10-400C    BTA10-600CW

Umax           400V           600V

Imax            10A            10A

Vgt            1.5V           1.5V

Igt            35mA           35ma

Ih             35mA           35ma

Case TO220, insulated tab

I show the data also for the 600V version because I have found that they use it in newer wall switches (WS467) and they might therefore perhaps also use it in the lamp module.

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