It’s strange, I didn’t have any problems buying smart bulbs. In order for the smart lamp to work, you need to screw it in and turn it on, and then connect via the application. Without it, it is impossible to fully control the lamp. The application must be installed in advance on a smartphone or other gadget. Smart lighting devices use LED light bulbs. They are distinguished by a large working resource, which can reach 100,000 hours. The devices work stably at temperatures from -60 to +60 ° C. Try to find high-quality wifi light bulbs, I can tell you where.