The Safe and Sound RF Detector is a compact, simple to use detector for Radio Frequency / Microwave Radiation. Manufactured and designed in Canada with circuit boards that are made in Silicon Valley, USA. Provides a quick and simple assessment of the RF present in your environment and requires no technical experience. It uses color coded LED's which correlate to measurement ranges to assess the RF exposure in your environment. The Safe and Sound also has a sound signature analysis which helps identify which RF Sources you are being exposed to. Built on the technology of the Safe and Sound Pro II the Safe and Sound EM3 has an accurate and fast response to environmental RF exposures.