About KULL Industries - KULL Industries is committed to developing better and more efficient products that serve the medical industry. These Exam Room Signals are proudly made in the U.S.A. You can count on KULL Industries to bring you innovative and reliable technologies that improve your exam room facilities. Kull provides exam room signals, medical indicator button magnets, and service alert flags. The medical room flags are a staple in exam room environments throughout the U.S. We provide flags in various quantities, lengths, and styles to best suit your needs. The button magnets are perfect for situations where there is not the ability to install the flag signals. These products are durable and effective, so you can quickly set a status and get back to what is most important.