Alfa ARS-25-57A Dual-Band Indoor Wi‑Fi Antenna 5/7 dBi RP-SMA Male

The ARS-25-57A is a dual-band dipole antenna designed for 2.4 GHz and 5 GHz wireless applications. It covers 2.4-2.5 GHz with 5 dBi gain and 5.1-5.9 GHz with 7 dBi gain, allowing one antenna to serve equipment operating across both supported bands. A 50 ohm impedance provides the specified electrical matching standard, while the 2.5:1 VSWR defines its stated level of impedance matching. Linear, vertical polarization establishes the intended signal orientation, helping users position the antenna correctly for installations that rely on the specified polarization. Connection is provided through an RP-SMA Male connector, making compatibility straightforward to assess for devices equipped with the corresponding antenna interface.

With dimensions of 18.5 x 231 mm, the ARS-25-57A uses a slim elongated form that is easy to account for when planning device placement and available clearance. It is specified for operation from -10 °C to +55 °C and for humidity up to 95% at 25 °C, giving clear environmental limits for deployment. The antenna's radiation patterns are provided for both the 2.4 GHz and 5 GHz bands in the XY plane, illustrating how signal energy is distributed around the antenna within each supported frequency range. Together, its dual-band coverage, different gain levels across the two bands, vertical linear polarization, RP-SMA Male interface, compact dimensions, and defined operating conditions provide the essential information needed to evaluate the ARS-25-57A for compatible dual-band wireless equipment.