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steute0412The Steute Business Area »Wireless«Expands the application possibilities of» Energy Harvesting «radio technology in industrial applications. A few months ago, an electrodynamic energy generator was introduced which, compared to the previously available component, has a considerably longer service life with more than 1 million switching cycles and a much higher switching frequency up to 1800 switching cycles / h. Now there is a new radio system that extends the range of the radio link.

This makes it possible to operate wireless switchgear at ranges without energy supply up to 700 m in the free field. The radio protocol operates in the 868 MHz band or with 915 MHz in the North American version. The 915 MHz version is FCC and IC approved; a CSA / UL approval is in preparation.

The user has the choice between two variants: In the case of self-powered switchgear, the switchgear generates so much energy that in addition to the transmitted radio protocol, an acknowledgment of receipt can also be received by the receiver. If this acknowledgment is then not received, there is still sufficient energy available to send the telegram again.

In battery-powered radio-controlled switching devices, bidirectional communication is possible thanks to the battery. Due to the low energy requirement of this low-power wireless technology, the battery life can be several years, depending on the application. In this way, even with sensitive applications the necessary transmission security is guaranteed.

The first switching devices to be equipped with the new wireless module include the RF 95 series position switches, which are available in two different ranges. With a stub antenna in the "shark fins" design, applications in the "long-range" range (LR) to 500 m are possible. As an alternative, an "Ultra Long Range" antenna (ULR) is available, which allows ranges up to 800 m in the free field. The different variants energy-self-sufficient / battery-supported and LR / ULR can be freely combined with each other.


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