
I had a CFL bulb I wanted to test so I needed a 4 pin adapter for a standard Edison screw base (E26/27). After all 5 bulbs didn't work and I found out on my own after some video research that these bulbs are fluorescent (didn't say CFL) so a ballast would be required which is why you can't find adapters at any reputable hardware store. So unless you have an E27 fitting with a wired ballast, this adapter will never work.

Royal Canin Gastrointestinal Low Fat Dry diet food for adult dogs with digestive disorders, 12 kg
23 Review

Ceiling lamp Yeelight YLXD013-B, 50 W, number of lamps: 1 pcs., color: white
62 Review

Lamp LED Xiaomi Mi Smart LED Bulb Warm White (XMBGDP01YLK), E27, 8 W, 2700 K
26 Review

Lamp LED Yeelight Smart LED Bulb 1S, YLDP13YL, E27, 8.5 W, 6500 K
43 Review