TriField meter explained: the TF2 measures AC magnetic fields (MAG), AC electric fields (ELEC), and radio-frequency energy (RF). Select one mode at a time and read its units: milligauss (mG), volts per meter (V/m), or milliwatts per square meter (mW/m²). Use these readings to locate ordinary interference and document changes during a ghost hunt. A spike does not identify a spirit.
This guide covers the digital TriField TF2. Other TriField models and basic LED EMF detectors have different controls and capabilities.

Quick answer:
- MAG, ELEC and RF measure different fields; compare readings taken in the same mode.
- Standard and Weighted settings apply to MAG and ELEC. RF has its own setting.
- The Field display is smoothed; Peak holds a recent maximum so brief bursts are easier to notice.
- Establish a local baseline, repeat measurements, and log nearby electronics.
- Manufacturer reference values are not a pass/fail test for health, electrical safety, or paranormal activity.
Table of Contents
- MAG, ELEC and RF modes
- 8 steps for reliable TriField meter readings
- Reading modes explained: Standard vs Weighted, Field vs Peak
- Reference readings and their limits
- Common mistakes and troubleshooting tips
- Using a TriField meter in paranormal investigations
- How to use this guide
- Compare EMF meters before buying
- FAQ
- Manufacturer sources
TriField meter explained: MAG, ELEC and RF modes
Each mode points to a different type of environmental source. The manufacturer’s TF2 specifications list these measurement bands:
| Mode | Displayed unit | Frequency coverage | Sources to check |
|---|---|---|---|
| AC magnetic (MAG) | mG | 40 Hz–100 kHz | Motors, transformers, appliances and wiring |
| AC electric (ELEC) | V/m | 40 Hz–100 kHz | Powered wiring, lights and appliances |
| RF/microwave | mW/m² | 20 MHz–6 GHz | Transmitting phones, routers and radios within that band |
The TF2 does not measure every frequency or every kind of radiation. Its RF specification ends at 6 GHz, so a low reading cannot rule out signals above that band. It is also not a DC compass-field meter.
For a broader explanation of the tools investigators use, read our EMF and RF meter guide.
8 steps for reliable TriField meter readings
Use the same method before and during a session so your notes describe comparable measurements.
- Check power and select the field. Check the battery indicator, then choose MAG, ELEC or RF. Give the display time to settle before writing down a value.
- Record the measurement setting. For a basic MAG or ELEC survey, use Standard and keep it consistent. If you also use Weighted, label those readings separately. RF does not have a Weighted setting.
- Keep handling consistent. Hold the lower part of the meter with the top uncovered. Your body can affect ELEC and RF readings. Note whether the meter was held or placed on a surface.
- Establish a baseline. Survey each room before a session. Note routers, phones, radios, chargers, lights and running appliances, along with repeatable hotspots.
- Stop and trace a change. When the number rises, pause and repeat the approach. Compare distances from nearby equipment without touching exposed wiring or opening electrical panels.
- Check an ordinary source. In RF mode, observe an active Wi-Fi router or transmitting phone from a consistent distance. In MAG mode, compare readings near a normally operating motor or power adapter. This is a response check, not calibration.
- Log the context. Record time, room, position, distance, mode, units, Field and Peak values, nearby equipment and any simultaneous audio or video event.
- Repeat the measurement. Return to the same position and repeat when equipment is active and inactive, where practical. Keep unexplained changes labeled as unexplained until you have supporting evidence.
A phone may transmit intermittently. One low reading near a phone does not establish that the meter is faulty. Check mode, distance, transmission activity and the manual before troubleshooting further.
Field tip: Test how your own camera, phone and two-way radio affect the meter before using them together on an investigation.
Standard vs Weighted and Field vs Peak
These are two different distinctions: Standard/Weighted changes the MAG or ELEC response; Field/Peak describes the values shown on the screen.
- Standard: use this setting for conventional AC field-strength comparisons.
- Weighted: emphasizes frequencies above 60 Hz. Do not mix these readings with Standard readings in the same log column.
- Field: a smoothed display value for a steadier reading.
- Peak: a recent maximum that the TF2 holds for about three seconds, or until a higher peak appears.
The hold time describes the display, not the duration of the original signal. A brief RF transmission can produce a Peak value higher than the simultaneous Field value. The screen is not a stored history of the entire investigation.
Consult the official TF2 manuals and quick-start resources for controls and operating details.
Reference readings and their limits
AlphaLab’s July 2023 TF2 quick-start guide gives the following reference values for relatively low-field homes and offices. These describe the manufacturer’s guidance; they are not universal household averages or regulatory limits.
| Measurement | Manufacturer reference value |
|---|---|
| Standard magnetic | Below 3 mG |
| Weighted magnetic | Below 5 mG |
| Standard or Weighted electric | Below 50 V/m |
| RF Field | Below 0.200 mW/m² |
| RF Peak | Below 1.000 mW/m² |
The guide says these values are to be averaged over 24 hours. A quick handheld survey does not establish that average, and the Field display is not an automatic 24-hour exposure calculation. Consult the dated manufacturer guide for its full context.
For paranormal fieldwork, compare repeatable readings with the baseline at that exact location. None of these numbers defines a ghost, proves a wiring fault, or certifies that an environment is safe.
Common mistakes and troubleshooting tips
- Mixing modes or units: a MAG reading in mG cannot be compared directly with an RF reading in mW/m².
- Changing handling mid-test: keep position and grip consistent, especially in electric and RF modes.
- Ignoring sensor direction: the TF2’s magnetic measurement combines three axes. Its electric and RF sensors are single-axis, so orientation matters when comparing those readings.
- Overlooking your own equipment: phones, radios and wireless cameras can introduce interference.
- Treating a Peak as a conclusion: repeat the test and look for an ordinary source.
If a reading seems inconsistent, check the selected mode, battery, distance and nearby electronics. Consult the manual if the display behaves abnormally. A response check around an everyday source does not certify accuracy or replace calibration.
Practical log: “10:15 p.m., hallway, Standard MAG, 1.2 mG Field, meter held at waist height, furnace running.” Clear notes make a later comparison more useful than “the meter spiked.”
Using a TriField meter in paranormal investigations
A TF2 measures electromagnetic fields. It cannot classify a reading as a spirit or distinguish a paranormal cause from an unknown ordinary source.
- Survey first: map repeatable hotspots before beginning a session.
- Record timing: synchronize notes with audio and video, and note when teammates use electronics.
- Investigate correlations: events occurring together deserve review, but coincidence alone does not establish a cause.
- Try to reproduce the change: compare positions, distances and equipment activity.
For the full workflow, see our beginner’s guide to using an EMF meter for ghost hunting. Keep away from exposed wiring and leave electrical diagnosis to a qualified professional.
How to use this guide
This is a researched operating guide, not a report of hands-on TF2 testing. Use it alongside the manual for your exact model. Before a session, decide which field you are checking and how you will record changes. Afterward, review the full log rather than selecting only the largest number.
Our EMF meter overview explains where these tools fit in an investigation kit.
Compare EMF meters before buying
Deciding which meter fits your needs? Compare Hound-200 and TriField TF2 measurement modes, displays and mute controls. Use the comparison to identify a feature you actually need, then check the exact model and package before ordering. If your current meter already meets your measurement needs, keep learning its controls rather than replacing it because of an unexplained reading.
Different meters measure different fields. Check the manufacturer’s specifications for each exact model before assuming it offers the TF2’s MAG, ELEC and RF modes. These links lead to existing HauntGears product guides:
We earn a commission when you buy through affiliate links, at no extra cost to you. Browse the HauntGears shop or our EMF reader buying guide to compare options. Product names and “best” claims are not evidence that a device detects ghosts.
Frequently asked questions
What do TriField meter readings mean?
The meaning depends on the selected mode. MAG measures AC magnetic fields in mG, ELEC measures AC electric fields in V/m, and RF reports radio-frequency power density in mW/m². Record the mode and unit with every value.
Why does the Peak number exceed the Field number?
Peak captures a recent maximum, while Field is smoothed. Brief wireless transmissions can raise Peak without producing an equally high steady Field reading.
Can a TriField TF2 detect ghosts?
No reading identifies a ghost. Investigators use the meter to document electromagnetic changes and check ordinary sources. An unexplained reading remains unexplained.
Should I rotate the TF2 to find a magnetic field?
The TF2 combines three magnetic axes. Keep position consistent; the single-axis electric and RF sensors need more attention to orientation.
Is one high reading proof of an unsafe environment?
No. A single reading does not provide a complete exposure assessment or electrical diagnosis. The manufacturer’s reference table is not a safety certification.
Manufacturer sources
- TriField TF2 official specifications
- TriField product support: current manuals and quick-start resources
- AlphaLab TF2 owner’s manual, version 1.0.2 (2021)
- AlphaLab TF2 quick-start guide, July 2023: reference values and averaging note
Recommended
- Emf Meters: Essential Tools for Investigators
- EMF/RF Meter: What It Is and How It Detects Radiation
- How to Use an EMF Meter for Ghost Hunting: Beginner’s Guide
- Best EMF Reader for Ghost Hunting (2026 Buyer’s Guide)
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