Description Feature: 1. The EMF meter helps measure electromagnetic fields to identify appliances that produce high-level emissions, allowing users to make informed decisions about limiting exposure. 2. The detector operates on a single 9V battery and reports EMF measurements across five milliGauss ranges. 3. Measures a wide spectrum of EMFs from 50 Hz up to 20,000 Hz and can detect a cell phone within 2 feet. 4. Helps monitor EMF levels to protect against potentially harmful long-term overexposure. 5. Features push-on/push-off operation; portable, easy to use, durable, reliable, and highly responsive with an easy-to-read LED light scale visible in both dark and bright conditions. Specifications: Accuracy: +/- 5% Detection Range: 0 to 20+ milliGauss Detection Frequency: 30 - 20,000 Hz Easy-to-read multi-segment LED display Accuracy of 5% at 50-60 Hz Size: 14.3 x 2.9 x 5.3 cm Power: 1 x 9V battery (included) LED Indicators: - 1st Light: Normal EMF field (0 to 1.5 mG) - 2nd Light (GREEN): Low Level EMF (1.5 to 2.5 mG) - 3rd Light (YELLOW): Mid Level EMF (2.5 to 10 mG) - 4th Light (ORANGE): High Level EMF (10 to 20 mG) - 5th Light (RED): Extremely High EMF (20+ mG) Package Includes: 1 x EMF Magnetic Field Detector