DSE 2019: Nummax Demos Its LED Ringlamp, a Circular LED Display in a Lamp Form Factor March 29, 2019 | Home / March 29, 2019 rave-video / DSE 2019: Nummax Demos Its LED Ringlamp, a Circular LED Display in a Lamp Form Factor DSE 2019: Nummax Demos Its LED Ringlamp, a Circular LED Display in a Lamp Form Factor