Microchek Microwave Oven Leak Detection Testing Device. Simply move Microchek along edges of microwave oven door while oven is in operation; unit will light up if oven leaks. (CAUTION: Do not operate microwave or Microchek without a load (cup of water or food item) in the oven.

This one simple device will:

• Check microwave oven externally for leakage
• Check microwave oven internally to see that it is operating properly
• Locate hot and cold spots
• Check microwave oven for proper power settings