Updating internal cell phone software
Also, for me, the other big drawback of this type of meter is the range it reads goes from ‘less than’ 20 microwatts/cm2 – ‘over’ 100 microwatts/cm2. S., the upper allowable radiation limit is 1000 microwatts/cm2, so whilst this meter would be fine for Europe, Russia etc (where the upper limit is only 10 microwatts/cm2) it doesn’t provide enough information for North America.And yes, whilst obviously, anything over 10 microwatts/cm2 is not safe, I still want to know HOW much radiation over the safe limit my kids (and I! The other feature about this meter you need to keep in mind is that it reads BOTH RF (radio frequency) microwave radiation and magnetic fields.So if you just want to know whether a spot or room is “safe” this meter is fine, but if you want to know how much radiation above 30 microwatts/cm2 is present, then you’re out of luck (remember, US and Canada upper allowable limit is 1000 microwatts/cm2).
The downside of this meter is that it is only a single-axis meter.The good part about this meter is that it will give you the actual meter reading (e.g.18 m W/m2) PLUS give you the color-coded ranges of safe/green-caution/yellow-unsafe/red.This meter covers 100 Hz – 3 GHz – so it will give you readings for most cell phones, wireless computers and cell towers. 3-Axis RF Meter (9.95) – As you move up the price scale, you’ll notice you get more features and more accuracy.However, the newer generation of cordless phones and other technology on the 5.8 GHz frequency will not be picked up by this meter. So this meter is a 3-axis meter, rather than a single-axis, like the two meters above.
So if you get an unsafe reading in your child’s classroom, for example, you won’t know whether that’s due to the Wi Fi or the lighting in the room – so you would need to turn off all the lights and unplug anything in the room.