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Time & Distance

Reducing Wi-Fi Availability


Classroom exposure to RF radiation can be reduced significantly by using Wi-Fi only on demand, and only for a specific pedagogical curriculum where connectivity to the internet is required and hard-wiring is not available.

The simplest and most effective method of limiting the availability of Wi-Fi is to control the power to the Wireless Access Points (WAPs) by means of a wall-mounted timer switch. The switch should be wired to control a dedicated outlet providing power to the routers and WAPs in the local network. 


Cost: Approx. $175 - $250 per classroom. 


Increasing Distance

The amount of radiation exposure a student receives from routers or WAPs decreases with distance. Every time the distance from a source to a child is doubled, exposure is reduced by 4X, or 400%. 

One of the easiest ways to reduce proximate exposures for students is to locate the router or WAP in a distant corner of the classroom, away from student desks. In most cases this will have no observable effect on device performance.

Depending on the layout of the classroom, the area above the main entry door is usually free from desks and student activities. 

Schools with residential dormitories where WAPs are located in dorm rooms should consider installing timers or switches so that students can turn off the WAP and sleep without constant exposure to RF radiation.

Classroom Layout - distant WAP.png

Please note: Reducing the levels of RF radiation through these measures is an important temporary step in mitigating exposure, but should not be considered sufficient to alleviate the problem or extinguish potential liability.  We strongly advocate for the replacement of all wireless technology with hardwired systems. 

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