Tri-Field Meter Kit
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Build Your Own Multi-Purpose MeterThree separate field sensors to provide a really cool readout on two Sci-Fi styled LED bar graphs!

Utilizing the latest technology, including Hall Effect sensors, you can walk around your house and actually "SEE" these fields around you! Can detect the magnetic field of the earth...THAT'S sensitive! Also detect radiation from monitors, TV's, electrical discharge, and RF emissions. You will have fun finding these fields and at the same time learn the technology behind them.

Three position selector switch that lets you select which type of field you want to detect: either RF, DC magnetic, or electric. Display consists of two LED bargraphs, one at the top and one at the bottom. These indicate the relative strength of the field you are detecting. All in all, it’s a great way to learn about the use of electronic components as sensors and own a little piece of sci-fi at the same time. A great teaching tool for kids of all ages; show them the invisible fields all around them and learn about electronic circuitry and soldering.

Detect RF from your radio transmitter, computer monitor, or cell phone.
Pick up the field from magnets around your house, even the earth!
“See” the charge on a staticly charged hairbrush or comb.
Learn how to use electronic parts as sensors.
Sense different magnetic poles!
Runs on 4 AAA batteries, not included.
Small, handy size for portability.
Fun LED displays.
Single Axis