See picture,
I needed a **quiet** x10-controlled relay
I purchased the UM7206 universal module, but the bistable relay inside is **extremely** loud.
This thing is an alternative, but it's expensive (in europe) :
http://www.appdig.com/adicon_new/rly8xa.htm
and I only needed one relay contact.
This one is lower cost...
http://www.cc-concepts.com/products/x10/
soooo, I built my own, using the same XM10 TTL Interface (TW523 in the USA) as above devices also require...
The device is based on a PIC 16F84 processor and a 5V reed-relay that I had laying around....
If anyone wants it, I can publish the c source code for the pic processor (c compiler used : http://www.sourceboost.com/)
the code is modified from this :
http://www.blitzlogic.com/x10.htm
(p.s. the reed relay is connected to my central heating and will allow girder to control the room temperature without using a thermostat)
Marcel