New wireless, batteryless limit switches from Steute Industrial Controls (Ridgefield, CT) include an internal electrodynamic energy generator. Displacement of the actuator generates power to send a uniquely coded signal to one or more compatible, easily-programmed receivers. If the limit switch does not receive the confirmation signal within 15 ms, a second signal is transmitted. The receiver accepts up to 10 discrete signals per channel.

The device, available for operation at 915 MHz, features an operating temperature range of -20 °C to + 65 °C and a maximum transmission range of 40 meters (indoors) and 450 meters (outdoors).

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This article first appeared in the June, 2016 issue of Sensor Technology Magazine.

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