What is a high-frequency fixture? The conventional fluorescent fixtures have started to recognize the clippers. Starter and a transformer, These fixtures provide 50 flashes per second, or 50 Hz. One should a fluorescent fixture already high frequency call as the flashes are higher than the 50 per second. But if you have a high frequency of 100Hz fixture, or 100 flashes per second, buy you will see few benefits compared to the 50 Hz fixtures. We speak only of HF as the flashes per second exceed 10,000 Hz. This means that instead of the 50 flashes per second, there are 10,000 or more are of flashes per second. That is really high frequency, these flashes, we can not perceive, and therefore we see this as a "silent light." The HF fixtures we sell even give up to 33,000 flashes per second! The benefits of real HF fixtures. save 25% energy gives a very long useful life of the bulb, or 30% more! gives a slightly quieter and relieves the oogtaak in humans and animals. shows no measurable electromagnetic fields Note on shipping: Because the items are shipped directly from the manufacturer to you, we are from € 9.00 shipping costs, regardless of the amount of the total.