The external module is a modified Responsiv Power Switch Remote LED Dimming Controller, ASIN B01MXR0HOT on Amazon.com. It dims LEDs with a non-dimmable power supply by responding to Blink'n'Dim commands from the power switch.

@@joedoll3162 Thank you very much for the reply. It's good to have a base answer, I will give it a glance and make some digging to adapt to my needs. Thank you for the info & link

Would you mind explain how you added the 2 additional components to the Tric dimmer ouput : the infrared optical insolator & resistor. Which characteristic for those components (110V I guess where I'm in 220V), and how did you connect this to the Responsive Power Switch ? If you could make a video to explain, or any electronic scheme, I would really appreciate. Thank you again for your reply Regards

@@JfD_xUp I'm afraid it is something you won't be able to do at home, if that's where you're going with this. The dimming controller operates by sensing brief interruptions of supplied (DC) power, and controlling LEDs by interpreting those interruptions as Blink'n'Dim commands. The opto-isolator was wired to ground the power sensing pin during the portion of the AC power cycle when voltage was present. Thus, the power sensing pin was fed a 120 Hz square wave with a duty cycle determined by the triac dimmer. Here's the "not at home" part: To interpret the modified power sensing signal, the microprocessor was reprogrammed to respond to triac duty cycle instead of Blink'n'Dim commands. I believe this technique is cheaper and better than the "dimmability" circuitry manufacturers add to their fixtures and bulbs. Maybe one day they will agree and use it. If they do, I recommend using a limited range "signaling" triac to simplify power supply design.

@@joedoll3162 Thank you very much for your reply, even if your video is 2 yrs old now :-D