DIR-878 AC1900 MU-MIMO Wi-Fi Gigabit Router
User Manual
Operation Guidelines
Wireless Installation Considerations
The DIR-878 device lets you access your network using a wireless connection from virtually
anywhere within the operating range of your wireless network. Keep in mind, however, that the
number, thickness and location of walls, ceilings, or other objects that the wireless signals must pass
through, may limit the range. Typical ranges vary depending on the types of materials and
background RF noise in your home or office. To maximize your wireless range, follow the
guidelines below.
1. Keep the number of walls and ceilings between the DIR-878 device and other network
devices to a minimum – each wall or ceiling can reduce your wireless network range by 3-
90 feet (1-30 meters).
2. Be aware of the direct line between network devices. Place your devices so that the signal
travels straight through a wall or ceiling (instead of at an angle) for better reception.
3. Building materials make a difference. A solid metal door or aluminum studs may have a
negative effect on your wireless range. Try to position your router, access points, and
computers so that the signal passes through drywalls or open doorways. Materials and
objects such as glass, steel, metal, walls with insulation, water (fish tanks), mirrors, file
cabinets, brick, and concrete will degrade your wireless signal.
4. Keep your router away (at least 3-6 feet or 1-2 meters) from electrical devices or appliances
that generate RF noise.
5. If you are using 2.4 GHz cordless phones or X-10 equipment (wireless devices such as
ceiling fans, lights, and home security systems), your wireless connection may degrade
dramatically or drop completely. Make sure your 2.4 GHz phone base is as far away from
your wireless devices as possible. Note, that the base transmits a signal even if the phone in
not in use.
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