Twitter \ Marcus Mengs on Twitter: "New receiver for @Logitech R400 presentation clicker mitigates wireless keystroke injection. Had 5 minutes to test a replacement receiver. The new ones marked with 'ESW3601' restrict
Best Laser Pointer Logitech R400 | Review - YouTube
910-001356 | Logitech R400 WiFi Wireless Presenter With Built In Laser Point | RS Components