Review on Perfect Prime Microwave Detector Backlight Recalibration by Cody Michels

Very easy to use, instructions are clear. The meter is supplied in a nylon case with a belt loop. Also includes a tripod to allow you to accurately position and stabilize the gauge if needed. The backlight and maximum hold functions are very practical, as well as the red light warning/warning for measured values over 5 mW/cm2. Press MAX and the instrument stores and displays the highest value in the series. Accuracy is given as +/- 1 dB. If it is dBm, it converts to +/- 1.26mW/cm2. I used a meter to test an old microwave at maximum power and with a plate full of food inside to represent normal use. The leakage did not exceed 1 mW/cm2. The maximum leak was at the top door hinge. The leak went to zero about a foot from the door. Standards may vary, but Federal Standard 21 CFR 1030.10 states that leakage measured 2 inches from the surface of a microwave oven must not exceed 5 mW/cm2 for the life of the oven. For users who think they have leaky ovens, measure the leak when the oven is loaded as you would normally use it - with food inside. Don't let it run out. I highly recommend this product.