5-LED indicator light with a special function shows different EMF values. The color coded scale is as follows: dark green 0-1.5 mG, green 1.5-2.5 mG, yellow 2.5-10 mG, orange 10-20 mG, red 20+ mG. Includes 50/60 Hz frequency monitoring. Bright and dark light readability. The LEDs are easy to read in both darkness and direct sunlight. Portable, simple to operate, durable, reliable and responsive. Battery powered (not included) and displays EMF readings starting at about 5 milligauss. Used for paranormal research and general EMF testing. Use Gauss to assess exposure and stay clear of high radiation. The K2 meter is commonly used in ghost hunting and for personal safety to identify potentially harmful high EMF radiation. Use scenarios: - Paranormal investigations or ghost hunting to spot fluctuating EMF sources. - Home or office EMF screening around appliances and wiring. - Personal safety checks to identify high EMF zones around equipment or power lines.