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http://www.nukepills.com/radiation-detector.htm
Monitor. Detect. Escape.
A U.S. military-grade personal dosimeter that instantly detects radiation exposure in the event of a dirty bomb, nuclear reactor accident and other sources of radiation.
This always-on wallet card/badge radiation detector does not require batteries or calibration.
The sensor-bar instantly changes color when it detects harmful levels of radiation. The darker the sensor bar turns, the higher the radiation dose.
Credit card size
34.99$
Save $20 on 2 RADTriage 2.0 Radiation Detectors when you purchase the Nukepills™ Emergency Kit PLUS