Radiation Detector - Pocket Geiger Type 4 for iOS devices-Turn Your iPhone/iPad/iPod into a Radiation Detector Product Name: Smart Radiation Detector Pocket Geiger Type 4 Supported Device: iPhone 3GS/4/4S and 5, iPad 1/2/3 and mini, iPod 2/3/4 and 5. Use iOS4.2 or later. Measuring Range: 0.05 Sv/h to 10 mSv/h (Cs-137), 0.01cpm to 300kcpm Sensor: Type 2 and 3 (Vishay Eight VBPW34), Type 4 (First Sensor AG (Germany) X100-7) Certification: Dutch Metrology Institute No.3320408