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Microwave oven leakage tester

A 2.45 GHz probe scaled for the FDA leakage limit of 5 mW/cm² at 5 cm — a range where ordinary consumer RF meters saturate.

2.45 GHz ISM

Last verified 12 August 2026.

Also searched as: microwave leak detector

Band covered
2.45 GHz ISM
Quantities measured
power density
Typical price
$30–$800

Detects

  • Door-seal and hinge leakage at the 5 cm reference distance

Cannot detect

  • Communications signals — single-band instruments are blind outside 2.45 GHz
  • Compliance, in the regulatory sense: FDA compliance testing uses a specified load and probe

What to insist on

  • Range covering at least 5 mW/cm² without saturating
  • A spacer that fixes the 5 cm reference distance

Related records

  • Microwave oven

    The only consumer appliance with its own federal leakage standard: 5 mW/cm² at 5 cm from the surface over the product's lifetime, which is 50,000,000 µW/m² — high compared with any communications source.

    Sources & emitters

Sources

  1. fda-microwave Microwave Ovens U.S. Food and Drug Administration. government, link checked 2026-08-12.

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