The Nardalert S3 RF and microwave safety monitor from Narda Safety Test Solutions detects electromagnetic radiation levels from 100 kHz to 50 GHz. The wearable nonionizing radiation personal monitor is designed to detect and provide the user with near-instantaneous visual, audible and physical notification of potentially dangerous levels of electromagnetic radiation generated by wireless, broadcast, radar and other RF and microwave emitters. The Nardalert S3 was tested by the United Kingdom’s National Physical Laboratory and was found to provide nearly isotropic detection performance when mounted on the body. Narda’s calibration facility in Hauppauge, N.Y., has received ISO-17025 accreditation from the A2LA. www.narda-sts.us