This portable smart EM (Electromagnetic) checker is a small sensor you can easily attach to your smart phone and use.
Every day we are exposed to many electronic devices such as TV, computer, microwave, etc. All these devices radiate a lot of electromagnetic waves, but we do not know how much waves they produce respectively. This easy to use portable EM checker will show you the EM figures on your smart phones so you can have the better control of it, and possible to avoid for your health and safety. Simply download the app from the internet and attach to your smart phone earphone jack. And it is ready to use.