Bests & Worsts Reviews from Amazon

My wife and I were recently shopping for a new house (our first home, no less), and I brought this product along to make sure that the "updated" electrical systems in the 90-100 year houses were truly updated and not just grounded outlets slapped onto non-grounded wiring. This device quickly and accurately let me know which houses had major problems which potentially saved us tons of money in the long run. Would recommend to anybody who needs to test outlets that they have installed, or to test outlets in potential future homes. P.S., I understand that testing the outlets in somebody else's home is probably borderline unethical, but I think that selling a home on the pretense that the electrical is updated when it actually isn't is far worse!