aha, there’s an AC version: https://www.google.com/aclk?sa=l&ai=DChcSEwj7g8KspbTqAhUmHq0GHRQ_BpsYABB…
https://www.google.com/aclk?sa=l&ai=DChcSEwj7g8KspbTqAhUmHq0GHRQ_BpsYABB…
21W Deep Red — choose your wavelength:
730nm 660nm 630nm
LED Lamp Light Bulb PAR30
E26 (US standard “Edison” thread)
E27 (European “barely close enough for US sockets” thread)
Copied from the thread on deep red light improving eyesight: