I bought it in January 2022 in a regional chain store for 2250. The device pleased and really works. Set up in 5 minutes using the WPS button. The main ZyXEL Keenetic DSL router is installed on the second floor of a private house. On the ground floor, the signal was weak "one antenna". After installing this amplifier, the signal became complete. The smartphone reconnected to Wi-Fi, no other settings were required. But moving around the house, the smartphone itself does not reconnect from the amplifier to the router and vice versa, you need to disable and turn off Wi-Fi in the phone settings. Although this is another story of a smartphone .
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