What this meter lacks in resolution it makes up with ease of use and very low cost. A favorite among beginner ghosthunters and those on a tight budget. Three LED lights which are easy to see in the dark indicate field strength:

Three LED lights signal field strength:
• Green: 0 - 2.5 mG ("little or no activity")
• Yellow: 2.5 - 7 mG ("moderate activity")
• Red: 8 or more mG ("high activity")

Single axis sensor, on/off toggle switch. One fresh 9V battery required.