Logitech Wireless Presenter R400 mouse they can extend the distance

they can extend the distance to several kilometers even tens of kilometers which can basically satisfy the distance requirement of LAN

Bright red laser pointer: Easy to see against most backgrounds

2× Gigabit RJ45 Ports

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Logitech Wireless Presenter R400 mouse they can extend the distanceLogitech Wireless Presenter R400 with Presenter mode,built in class 2 laser pointer, intuitive touch keys for easy slideshow control; AA batteries required (best with Polaroid AA batteries), Bright red laser pointer: Easy to see against most backgrounds, Up to 50 foot wireless range for freedom to move around the room, 2. 4 GHz RF wireless technology, built in docking bay stores receiver for easy pack up and portability