Nora 4 Inch Iolite High Lumen Round/Round Deep Reflector Adjustable Trim 1500/2000Lm 5000K Haze/White Not Compatible With 2500Lm Housing (NIO-4RD50XHW/HL) nostock and a built-in on/off turn-knob

and a built-in on/off turn-knob switch sits at the side of the socket cap

Nora 5 Inch IC Airtight LED Dedicated New Construction Housing 120-277V Triac/ELV Or 0-10V Dimming (NHIC-5LMRAT/4W)

Lithonia Volumetric LED 2X2 Nominal 3300Lm EldoLED Dimming To 1 Percent 80 CRI 4000K (2RTL2 33L EZ1 LP840)

Lithonia Fixture Mount Sensor Interchangeable Lens Line Voltage High Mount 360 Degree And High Mount Aisleway (LSXR 650 J100)

Remke Single Key M12 Micro-Link Field Attachable Connector 4-Pole Male PG7 Entry (304EFW7)

Nora 4 Inch Iolite High Lumen Round/Round Deep Reflector Adjustable Trim 1500/2000Lm 5000K Haze/White Not Compatible With 2500Lm Housing (NIO-4RD50XHW/HL) nostock and a built-in on/off turn-knobNora 4 Inch Iolite High Lumen Round Round Deep Reflector Adjustable Trim 1500 2000Lm 5000K Haze White Not Compatible With 2500Lm Housing (NIO 4RD50XHW HL)