{
  "schema": "benchpicked_consumer_research_export.v1",
  "route": "/emf/trifield-tf2-review/",
  "product_id": "trifield-tf2-review",
  "revision": "2026-10-12-tf2-full-page",
  "page_content_hash": "34caf0b3de6c624c8836675a2cd5c64a41919d2a9f55000edb4c979141e3809e",
  "market": "US",
  "currency": "USD",
  "is_benchpicked_measurement": false,
  "reader_task": "Decide whether TF2 covers the field and frequency you need, then keep comparable observations without confusing modes, units or health risk.",
  "freshness": "maintenance_due",
  "freshness_assessed_at": "2026-11-04T01:23:50.238Z",
  "facts": [
    {
      "attribute": "mag_frequency_range",
      "condition": "AC magnetic frequency coverage; not DC magnetic fields.",
      "id": "t-mag-frequency",
      "locator": "Manual v2.1 p2 and product specification table: AC Magnetic Frequency Range",
      "market": "US",
      "max_age_days": 90,
      "model": "trifield-tf2-review",
      "source_id": "tf2-manual",
      "state": "documented",
      "unit": "Hz",
      "value": [
        40,
        100000
      ],
      "source_url": "https://core.alphalabinc.com/files/tf2-manual-v2.1",
      "source_type": "manufacturer_manual",
      "checked_at": "2026-10-11T15:34:18.808Z",
      "maintenance_due": false
    },
    {
      "attribute": "elec_frequency_range",
      "condition": "AC electric frequency coverage; not static electric fields.",
      "id": "t-elec-frequency",
      "locator": "Manual v2.1 p2 and product specification table: AC Electric Frequency Range",
      "market": "US",
      "max_age_days": 90,
      "model": "trifield-tf2-review",
      "source_id": "tf2-manual",
      "state": "documented",
      "unit": "Hz",
      "value": [
        40,
        100000
      ],
      "source_url": "https://core.alphalabinc.com/files/tf2-manual-v2.1",
      "source_type": "manufacturer_manual",
      "checked_at": "2026-10-11T15:34:18.808Z",
      "maintenance_due": false
    },
    {
      "attribute": "rf_frequency_range",
      "condition": "20 MHz to 6 GHz. A 6 GHz upper limit does not cover every 6 GHz Wi-Fi channel or mmWave 5G band.",
      "id": "t-rf-frequency",
      "locator": "Manual v2.1 pp2,5; product table: RF/Microwave Frequency Range",
      "market": "US",
      "max_age_days": 90,
      "model": "trifield-tf2-review",
      "source_id": "tf2-manual",
      "state": "documented",
      "unit": "Hz",
      "value": [
        20000000,
        6000000000
      ],
      "source_url": "https://core.alphalabinc.com/files/tf2-manual-v2.1",
      "source_type": "manufacturer_manual",
      "checked_at": "2026-10-11T15:34:18.808Z",
      "maintenance_due": false
    },
    {
      "attribute": "mag_sensor_axes",
      "condition": "Magnetic reading depends on meter location, not where its top points.",
      "id": "t-mag-axes",
      "locator": "Manual v2.1 pp2,4",
      "market": "US",
      "max_age_days": 90,
      "model": "trifield-tf2-review",
      "source_id": "tf2-manual",
      "state": "documented",
      "unit": "axes",
      "value": 3,
      "source_url": "https://core.alphalabinc.com/files/tf2-manual-v2.1",
      "source_type": "manufacturer_manual",
      "checked_at": "2026-10-11T15:34:18.808Z",
      "maintenance_due": false
    },
    {
      "attribute": "elec_sensor_axes",
      "condition": "Directional. Point the top toward the source; hand and body placement affect the reading.",
      "id": "t-elec-axes",
      "locator": "Manual v2.1 pp4,5 and product table: AC Electric 1-axis",
      "market": "US",
      "max_age_days": 90,
      "model": "trifield-tf2-review",
      "source_id": "tf2-product",
      "state": "documented",
      "unit": "axis",
      "value": 1,
      "source_url": "https://trifield.com/products/trifield%C2%AE-emf-meter-model-tf2",
      "source_type": "manufacturer",
      "checked_at": "2026-10-11T15:31:14.970Z",
      "maintenance_due": false
    },
    {
      "attribute": "rf_sensor_axes",
      "condition": "Directional. Keep orientation and handling consistent; a low reading in one direction is not a room-wide survey.",
      "id": "t-rf-axes",
      "locator": "Manual v2.1 pp4,5 and product table: RF/Microwave 1-axis",
      "market": "US",
      "max_age_days": 90,
      "model": "trifield-tf2-review",
      "source_id": "tf2-product",
      "state": "documented",
      "unit": "axis",
      "value": 1,
      "source_url": "https://trifield.com/products/trifield%C2%AE-emf-meter-model-tf2",
      "source_type": "manufacturer",
      "checked_at": "2026-10-11T15:31:14.970Z",
      "maintenance_due": false
    },
    {
      "attribute": "mag_display_maximum",
      "condition": "Resolution 0.1 mG. An over-range display is not an exact value and must not be recorded as 100 mG.",
      "id": "t-mag-max",
      "locator": "Product table: AC Magnetic Maximum Range and Resolution; manual v2.1 p8",
      "market": "US",
      "max_age_days": 90,
      "model": "trifield-tf2-review",
      "source_id": "tf2-product",
      "state": "documented",
      "unit": "mG",
      "value": 100,
      "source_url": "https://trifield.com/products/trifield%C2%AE-emf-meter-model-tf2",
      "source_type": "manufacturer",
      "checked_at": "2026-10-11T15:31:14.970Z",
      "maintenance_due": false
    },
    {
      "attribute": "elec_display_maximum",
      "condition": "Resolution 1 V/m. Over-range is a censored observation, not a measured 1000 V/m.",
      "id": "t-elec-max",
      "locator": "Product table: AC Electric Maximum Range and Resolution; manual v2.1 p8",
      "market": "US",
      "max_age_days": 90,
      "model": "trifield-tf2-review",
      "source_id": "tf2-product",
      "state": "documented",
      "unit": "V/m",
      "value": 1000,
      "source_url": "https://trifield.com/products/trifield%C2%AE-emf-meter-model-tf2",
      "source_type": "manufacturer",
      "checked_at": "2026-10-11T15:31:14.970Z",
      "maintenance_due": false
    },
    {
      "attribute": "rf_display_maximum",
      "condition": "Resolution 0.001 mW/m2. Over-range must be retained separately from a numeric observation.",
      "id": "t-rf-max",
      "locator": "Product table: RF/Microwave Maximum Range and Resolution; manual v2.1 p8",
      "market": "US",
      "max_age_days": 90,
      "model": "trifield-tf2-review",
      "source_id": "tf2-product",
      "state": "documented",
      "unit": "mW/m2",
      "value": 19.999,
      "source_url": "https://trifield.com/products/trifield%C2%AE-emf-meter-model-tf2",
      "source_type": "manufacturer",
      "checked_at": "2026-10-11T15:31:14.970Z",
      "maintenance_due": false
    },
    {
      "attribute": "mag_published_accuracy",
      "condition": "Manufacturer specification at the stated reference frequencies, not independent validation or a full-band error bound.",
      "id": "t-mag-accuracy",
      "locator": "Product specification table: AC Magnetic Accuracy",
      "market": "US",
      "max_age_days": 90,
      "model": "trifield-tf2-review",
      "source_id": "tf2-product",
      "state": "documented",
      "unit": "",
      "value": "+/-4% at 50/60 Hz",
      "source_url": "https://trifield.com/products/trifield%C2%AE-emf-meter-model-tf2",
      "source_type": "manufacturer",
      "checked_at": "2026-10-11T15:31:14.970Z",
      "maintenance_due": false
    },
    {
      "attribute": "elec_published_accuracy",
      "condition": "Manufacturer specification at the stated reference frequencies, not independent validation or a full-band error bound.",
      "id": "t-elec-accuracy",
      "locator": "Product specification table: AC Electric Accuracy",
      "market": "US",
      "max_age_days": 90,
      "model": "trifield-tf2-review",
      "source_id": "tf2-product",
      "state": "documented",
      "unit": "",
      "value": "+/-5% at 50/60 Hz",
      "source_url": "https://trifield.com/products/trifield%C2%AE-emf-meter-model-tf2",
      "source_type": "manufacturer",
      "checked_at": "2026-10-11T15:31:14.970Z",
      "maintenance_due": false
    },
    {
      "attribute": "rf_published_accuracy",
      "condition": "Manufacturer specification at 1 GHz. Do not apply it unchanged to 2.4 GHz, 5 GHz or the entire RF band.",
      "id": "t-rf-accuracy",
      "locator": "Product specification table: RF/Microwave Accuracy",
      "market": "US",
      "max_age_days": 90,
      "model": "trifield-tf2-review",
      "source_id": "tf2-product",
      "state": "documented",
      "unit": "",
      "value": "+/-20% at 1 GHz",
      "source_url": "https://trifield.com/products/trifield%C2%AE-emf-meter-model-tf2",
      "source_type": "manufacturer",
      "checked_at": "2026-10-11T15:31:14.970Z",
      "maintenance_due": false
    },
    {
      "attribute": "mode_weighting",
      "condition": "The manual describes frequency weighting above 60 Hz up to 500 Hz. Standard and Weighted readings are similar for pure 50/60 Hz fields; do not mix them in a trend or infer personal biological risk.",
      "id": "t-weighted",
      "locator": "Manual v2.1 pp4,7",
      "market": "US",
      "max_age_days": 90,
      "model": "trifield-tf2-review",
      "source_id": "tf2-manual",
      "state": "documented",
      "unit": "",
      "value": "Weighted MAG and Weighted ELEC only",
      "source_url": "https://core.alphalabinc.com/files/tf2-manual-v2.1",
      "source_type": "manufacturer_manual",
      "checked_at": "2026-10-11T15:34:18.808Z",
      "maintenance_due": false
    },
    {
      "attribute": "peak_hold",
      "condition": "The peak holds the highest instant pulse for three seconds unless a stronger pulse occurs. RF Field is described as overall average; a short look is not a 24-hour average.",
      "id": "t-peak",
      "locator": "Manual v2.1 pp3,5",
      "market": "US",
      "max_age_days": 90,
      "model": "trifield-tf2-review",
      "source_id": "tf2-manual",
      "state": "documented",
      "unit": "seconds",
      "value": 3,
      "source_url": "https://core.alphalabinc.com/files/tf2-manual-v2.1",
      "source_type": "manufacturer_manual",
      "checked_at": "2026-10-11T15:34:18.808Z",
      "maintenance_due": false
    },
    {
      "attribute": "observed_device_price",
      "condition": "Official TF2 listing observed in stock on October 11, 2026; not a delivered quote. Shipping, tax and later supply are unknown.",
      "id": "t-price",
      "locator": "Official product Product/Offer JSON-LD: SKU TF2, USD186, InStock",
      "market": "US",
      "max_age_days": 1,
      "model": "trifield-tf2-review",
      "source_id": "tf2-product",
      "state": "documented",
      "unit": "USD",
      "value": 186,
      "source_url": "https://trifield.com/products/trifield%C2%AE-emf-meter-model-tf2",
      "source_type": "manufacturer",
      "checked_at": "2026-10-11T15:31:14.970Z",
      "maintenance_due": true
    },
    {
      "attribute": "independent_accuracy_validation",
      "condition": "No original calibration comparison with a sufficiently checkable reference, setup and uncertainty was admitted in this research round. This does not prove that no test exists.",
      "id": "t-independent",
      "locator": "This round's source screening; manufacturer accuracy remains manufacturer evidence",
      "market": "US",
      "max_age_days": 90,
      "model": "trifield-tf2-review",
      "source_id": "tf2-product",
      "state": "extraction_pending",
      "unit": "",
      "value": null,
      "source_url": "https://trifield.com/products/trifield%C2%AE-emf-meter-model-tf2",
      "source_type": "manufacturer",
      "checked_at": "2026-10-11T15:31:14.970Z",
      "maintenance_due": false
    }
  ],
  "sources": [
    {
      "checked_at": "2026-10-11T15:31:14.970Z",
      "id": "tf2-product",
      "label": "AlphaLab TF2 official product specification table",
      "status": "active",
      "type": "manufacturer",
      "url": "https://trifield.com/products/trifield%C2%AE-emf-meter-model-tf2",
      "use_scope": "bounded_editorial_summary"
    },
    {
      "checked_at": "2026-10-11T15:34:18.808Z",
      "id": "tf2-manual",
      "label": "AlphaLab TF2 instruction manual v2.1, copyright 2024",
      "status": "active",
      "type": "manufacturer_manual",
      "url": "https://core.alphalabinc.com/files/tf2-manual-v2.1",
      "use_scope": "bounded_editorial_summary"
    },
    {
      "checked_at": "2026-10-11T15:53:13.113Z",
      "id": "tf2-owner-audio",
      "label": "What's Best Forum: dated TF2 owner discussion, posts 1, 7 and 22",
      "status": "active",
      "type": "owner_report",
      "url": "https://www.whatsbestforum.com/threads/measuring-emf-the-trifield-tf2-meter.32320/",
      "use_scope": "bounded_editorial_summary"
    }
  ],
  "tools": {
    "emf_recording": [
      {
        "axes_fact": "t-mag-axes",
        "frequency_fact": "t-mag-frequency",
        "id": "standard-mag",
        "label": "Standard MAG",
        "maximum_fact": "t-mag-max"
      },
      {
        "axes_fact": "t-mag-axes",
        "frequency_fact": "t-mag-frequency",
        "id": "weighted-mag",
        "label": "Weighted MAG",
        "maximum_fact": "t-mag-max"
      },
      {
        "axes_fact": "t-elec-axes",
        "frequency_fact": "t-elec-frequency",
        "id": "standard-elec",
        "label": "Standard ELEC",
        "maximum_fact": "t-elec-max"
      },
      {
        "axes_fact": "t-elec-axes",
        "frequency_fact": "t-elec-frequency",
        "id": "weighted-elec",
        "label": "Weighted ELEC",
        "maximum_fact": "t-elec-max"
      },
      {
        "axes_fact": "t-rf-axes",
        "frequency_fact": "t-rf-frequency",
        "id": "rf",
        "label": "RF",
        "maximum_fact": "t-rf-max"
      }
    ]
  },
  "third_party": {
    "heading": "Why accuracy and a high reading are different questions",
    "source_ids": [
      "tf2-product",
      "tf2-manual"
    ],
    "summary": "The official reference-frequency accuracy claims help define a shortlist, but they do not supply an independent full-band calibration result. A broadband RF reading alone does not identify which transmitter or frequency produced it.",
    "interpretation": "Repeat comparisons only with the same mode, display type, location, source state and handling. A change after moving the meter may reflect the setup rather than a change in the source.",
    "disagreement": "Manufacturer low-field recommendations are not used here as medical thresholds or a pass/fail safety score. The review does not reproduce DIY grounding or electrical modification instructions.",
    "method": "We checked the current official table and the ten-page v2.1 manual. No BenchPicked physical measurement or qualifying original independent performance test was conducted or admitted."
  },
  "owner_context": {
    "sample_count": 1,
    "overview": "One detailed, dated owner account was included from one audio forum thread. It illustrates a source-finding use case, not typical satisfaction, long-term durability or a recommendation to buy shielding accessories.",
    "method": "Both available thread pages, 27 posts, were reviewed with follow-up context. Repeated posts by the same author count once. This original factual summary links the source; it does not reproduce the discussion. The forum's republication restriction remains separate from this limited editorial use.",
    "excluded": "Another owner gave only a brief endorsement with no usable method or conditions; questions and duplicate quotations were not samples. A commercial site's terms explicitly prohibit automated extraction, so it was excluded. Another review supplied no checkable original test and misdescribed the display and weighting; a competing maker's thread failed to load. No restricted route was bypassed.",
    "reports": [
      {
        "source_id": "tf2-owner-audio",
        "model": "trifield-tf2-review",
        "date": "2021-02-03",
        "original_key": "whatsbestforum:32320:701611",
        "summary": "A self-reported TF2 owner used the meter around an audio rack and nearby appliances, varying its position to investigate field readings. Later in the same discussion, the owner acknowledged that shielding can reshape a magnetic field and complicate interpretation.",
        "context": "An audio-enthusiast discussion from January 30 to February 7, 2021. Other replies challenge the claimed listening benefits. The posts provide no controlled listening comparison or calibrated reference setup; no audible improvement, shielding effectiveness or health result is established.",
        "locator": "Ownership: post 1, January 30, 2021. Technique: post 7, February 3. Qualification: post 22, February 7. Both thread pages reviewed; duplicate quotations and later replies are not extra samples.",
        "deep_link": "https://www.whatsbestforum.com/threads/measuring-emf-the-trifield-tf2-meter.32320/#post-701611",
        "evidence_type": "owner_self_report",
        "is_benchpicked_data": false
      }
    ],
    "buyer_implication": "The useful takeaway is to record position and operating conditions, not to assume that a high reading explains sound quality or requires an accessory purchase. Representative usability, long-term reliability and independent calibration remain open; no community rating is assigned."
  },
  "ownership": {
    "heading": "Readings you can compare",
    "sections": [
      {
        "body": "Standard reports field strength. Weighted MAG/ELEC emphasizes higher frequencies; keep the setting with each reading rather than treating a larger Weighted value as a worse device. For pure 50/60 Hz fields the manual says the two settings give similar numbers. RF has only its RF setting.",
        "heading": "Standard versus Weighted",
        "source_id": "tf2-manual"
      },
      {
        "body": "The large lower number is Field. The upper-left Peak retains a pulse for three seconds, replaced by a stronger pulse. Record them in separate columns or series. Neither a momentary Field nor a three-second Peak establishes a day's exposure; the screen percentage is percentage of full scale, not percentage of a safety limit.",
        "heading": "Field versus Peak",
        "source_id": "tf2-manual"
      },
      {
        "body": "For MAG, record the meter's location. For ELEC and RF, also record where its top points and hold the lower half without covering the top. The manual warns that holding versus setting the meter down can change readings. Use the same handling for comparisons and note nearby objects and source operating state.",
        "heading": "Location, direction and handling",
        "source_id": "tf2-manual"
      },
      {
        "body": "The manual specifies a 9V battery; the official table quotes more than 20 hours without backlight and more than 12 with it. Audio/backlight controls sit inside the battery compartment and are operated with the meter on. A dash-style over-range screen is not zero or an exact maximum. Record over-range and use suitable equipment if you need a numeric value above the range.",
        "heading": "Battery and an over-range screen",
        "source_id": "tf2-manual"
      },
      {
        "body": "Check the exact TF2 kit, included accessories, seller warranty and return terms before paying. The USD186 official listing is an October 11 observation, not a current delivered quote. If your task requires automatic logging, external probes or calibration records, verify those requirements separately; this browser log does not add those capabilities to the meter.",
        "heading": "Before ordering",
        "source_id": "tf2-product"
      }
    ]
  },
  "maintenance": {
    "changes": [
      {
        "date": "2026-10-12",
        "note": "Local source-based TF2 research candidate and measurement-record tool; not a published revision."
      },
      {
        "date": "2026-10-12",
        "note": "Local full-page consolidation, reference-frequency correction, content revision metadata and reader-log correction workflow. Original source and owner dates preserved; not a published revision."
      }
    ],
    "method": "Field-level factual summaries from exact-model official text and manual page locators; source-use exclusions kept in the local review. No physical tests or borrowed-photo evidence.",
    "owner": "BenchPicked editorial desk",
    "policy": "Price observation: one-day review interval; specifications: 90 days. These are editorial maintenance choices, not search-engine standards. Rechecks preserve old dates; unchanged facts do not justify a new publication date."
  },
  "decision_support": {
    "fit_conditions": [
      {
        "fact_ids": [
          "t-mag-frequency",
          "t-elec-frequency",
          "t-rf-frequency"
        ],
        "text": "Shortlist TF2 for separate AC magnetic/electric screening and RF observations inside its documented bands. Skip it if your task is DC, below 20 MHz RF or above 6 GHz RF."
      },
      {
        "fact_ids": [
          "t-weighted"
        ],
        "text": "Use Standard mode when comparing ordinary field-strength records. Keep Weighted MAG/ELEC in separate series; there is no Weighted RF setting."
      },
      {
        "fact_ids": [
          "t-rf-frequency",
          "t-independent"
        ],
        "text": "A source-finding indication is not a frequency-specific transmitter diagnosis, a calibrated compliance result or a health verdict. If that is your purchase goal, obtain application-specific expertise before buying accessories."
      }
    ]
  },
  "content_revised_at": "2026-10-12",
  "historical_spec_records": [
    {
      "field": "Field modes",
      "recorded_value": "AC magnetic, AC electric, and RF fields in one handheld consumer meter",
      "source_basis": "Manufacturer product page",
      "recorded_at": null,
      "verification_scope": "historical_native_attribution_not_current_source_verification",
      "current_correction": null
    },
    {
      "field": "AC magnetic range",
      "recorded_value": "40 Hz to 100 kHz",
      "source_basis": "Manufacturer specification sheet",
      "recorded_at": null,
      "verification_scope": "historical_native_attribution_not_current_source_verification",
      "current_correction": null
    },
    {
      "field": "AC electric range",
      "recorded_value": "40 Hz to 100 kHz",
      "source_basis": "Manufacturer specification sheet",
      "recorded_at": null,
      "verification_scope": "historical_native_attribution_not_current_source_verification",
      "current_correction": null
    },
    {
      "field": "RF range",
      "recorded_value": "20 MHz to 6 GHz",
      "source_basis": "Manufacturer specification sheet",
      "recorded_at": null,
      "verification_scope": "historical_native_attribution_not_current_source_verification",
      "current_correction": null
    },
    {
      "field": "Published magnetic accuracy",
      "recorded_value": "±4% at 50/60 Hz",
      "source_basis": "Manufacturer specification sheet",
      "recorded_at": null,
      "verification_scope": "historical_native_attribution_not_current_source_verification",
      "current_correction": null
    },
    {
      "field": "Published electric accuracy",
      "recorded_value": "±5%",
      "source_basis": "Manufacturer specification sheet",
      "recorded_at": null,
      "verification_scope": "historical_native_attribution_not_current_source_verification",
      "current_correction": {
        "fact_id": "t-elec-accuracy",
        "value": "+/-5% at 50/60 Hz",
        "condition": "Manufacturer specification at the stated reference frequencies, not independent validation or a full-band error bound.",
        "source_url": "https://trifield.com/products/trifield%C2%AE-emf-meter-model-tf2",
        "checked_at": "2026-10-11T15:31:14.970Z"
      }
    },
    {
      "field": "Published RF accuracy",
      "recorded_value": "±20% at 1 GHz",
      "source_basis": "Manufacturer specification sheet",
      "recorded_at": null,
      "verification_scope": "historical_native_attribution_not_current_source_verification",
      "current_correction": null
    },
    {
      "field": "RF power-density range",
      "recorded_value": "0.001 to 19.999 mW/m²",
      "source_basis": "Manufacturer specification sheet",
      "recorded_at": null,
      "verification_scope": "historical_native_attribution_not_current_source_verification",
      "current_correction": null
    },
    {
      "field": "Magnetic axis context",
      "recorded_value": "3-axis magnetic measurement",
      "source_basis": "Manufacturer specification sheet",
      "recorded_at": null,
      "verification_scope": "historical_native_attribution_not_current_source_verification",
      "current_correction": null
    },
    {
      "field": "Power",
      "recorded_value": "9V alkaline battery",
      "source_basis": "Manufacturer specification sheet",
      "recorded_at": null,
      "verification_scope": "historical_native_attribution_not_current_source_verification",
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}