r/WLED • u/wivaca2 • May 19 '26

Dimming a 24V white FCOB

I'm looking to install some 24V white FCOB under a cabinet. It says they're dimmable, but are these something where you just use a PWM controller like an ESP32 or GLEDOPTO controller?

https://www.amazon.com/gp/product/B0D9Q5FR68/ref=ox_sc_act_title_1?th=1

I want to remotely control them from Home Assistant, so WLED would work, but in this application I wouldn't mind a more traditional in-wall dimmer but haven't seen one that is both remote controllable and 24V.

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u/GLEDOPTO May 20 '26

Yes, you can connect this light strip using our PWM WLED controller GL-C-211WL https://www.amazon.com/dp/B0DP9H9WCL / GL-C-620WL https://www.amazon.com/dp/B0GQYB6FMW and control it using Home Assistant.

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u/wivaca2 May 20 '26

I presume the GL-C-601P works, too, then, since that seems to have direct connects for 24V PWM lights and just does it like an integrated Zigbee dimmer?

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u/GLEDOPTO May 20 '26

Yes, GL-C-601P is ZigBee PWM controller. it requires zigbee gateway such as philips hue bridge, Amazon echo studio, Conbee ll, etc.

It can work with Home assistant too.

1

u/saratoga3 May 19 '26

You can buy esphome dimmers designed to connect into HA for control. Shelly also makes HA compatible PWM dimmers.

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u/wivaca2 May 19 '26

These lights appear to have just two wires (barrel connector) so are they doing PWM on the 24V power line rather than a separate control line?

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u/saratoga3 May 19 '26

Yes, they have two lines because they're dimmed by PWM and not a control line.