TriField Meter is the most used test instrument in the world for simple identification of EMF (Electromagnetic Fields) that many studies & government agencies have identified as potentially hazardous to human health. It is the only unit that measures Magnetic, Electric & Radio Frequency (RF) Fields all in a single portable hand-held device. It is also switchable between 1-Axis and 3-Axis measurement and has a line out to connect to other devices. Health effects of excessive EMF exposure can include disrupted nerve and other cell functions anywhere in your body, causing neurological symptoms & behavioral changes, altered cell growth, cell mutations (DNA damage), fibro-myalgia, unexplained chronic fatigue, brain fog, learning problems, & even cancer. Problem Magnetic, Electric or RF fields can come from many devices we use daily. TriField Meter can measure levels from SmartMeters, Cell Phones & Towers, Wireless Routers, Cordless Phones, Bluetooth, AC Power Lines, faulty House Wiring, Microwaves, Fridges, Stoves, Clock Radios and many other appliances. Then you can take action to reduce your exposure. It is especially important to protect children who are much more vulnerable to these emissions. Here is a useful review of this Meter https://youtu.be/yLTeANWBsUE The TriField is made in USA and the current model sells for approx CAN$360 (incl. shipping & taxes). This Meter is in like-new condition, offered for only $95