The 15731 is a 900 MHz, unity gain (0 dBd), 1/4 wave whip, straight antenna. The 15731 is an omnidirectional antenna that attaches directly to the product (no cables). It should be used inside of an enclosure or building.
Omnidirectional antennas pick up signals from all directions (i.e., they don't need to be pointed directly at the source of the signal to pick it up).
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