EMF Tester
Rs. 3,499
MRP Rs. 4,599
23% OFF
4.6/5
Rated by 87 customers
✓ Reads two fields separately — electric (V/m) and magnetic (µT)
✓ Electric 1–1999 V/m · Magnetic 0.01–19.99 µT · AVG and VPP modes
✓ Built for wiring, boards, motors and chargers — not Wi-Fi or RF
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✓ Dispatched within 2 working days
✓ Expected delivery 7 working days from dispatch, across India
✓ In the box: the tester, a Type-C cable and the manual
✓ A measuring instrument, not a medical device
Make the invisible visible. 📡
You cannot manage what you cannot see. An EMF tester reads the electric and magnetic fields around routers, inverters, wiring, meters and bedside chargers, and turns them into a number you can actually act on.
Walk it slowly through the house and the map builds itself: where the fields are high, where the bed should not be, what is worth unplugging at night. The first tool to buy if you are serious about a low-EMF home.
EMF Tester
Rs. 3,499
MRP Rs. 4,599
23% OFF
Two fieldselectric and magnetic, read and flagged separately on one display
0.3–0.4 µTexposure band flagged in pooled childhood-leukaemia studies — the basis for this device’s “Good” threshold
~30 cmdistance at which most household appliance fields fall toward background
100–200 µTICNIRP general-public reference level at 50 Hz, for scale
Key benefits
Six things you can do on the first evening
🧭
Tell the two fields apart
A lamp switched off carries an electric field but no magnetic one. Both readings are shown, each with its own flag.
📍
Find where it comes from
Sweep slowly: the reading climbs as you approach and collapses as you retreat. That gradient locates the source.
🛏️
Place the bed, desk and cot
Measure at headboard and seated height — where you spend hours — rather than at the socket.
🔑
Check a flat before you sign
Ten minutes covers the bedroom wall, the meter cupboard and the room you would use as a nursery.
📊
Average, don’t chase spikes
AVG matches how guideline levels are defined. VPP catches the brief surge when a motor starts.
🚩
A “Good” band set low
The flag sits near the cautious 0.4 µT figure, not the far higher legal ceiling. Crossing it means step back.
Why an EMF tester?
The wiring behind your wall never clocks out
Every argument about household EMF — the alarmed ones and the dismissive ones alike — is being had by people who have never measured their own rooms.
⚡
Electric field (V/m)
Produced by voltage. A cable carries one the moment it is live, whether or not the appliance is switched on. Walls, furniture and human bodies weaken it, so it changes sharply from one spot in a room to the next.
🧲
Magnetic field (µT)
Produced by current — electricity actually flowing, which happens only when a device is drawing power. It passes through most building materials unimpeded, so it is not stopped by a wall. It fades with distance instead.
📏
Distance is the lever
A hair dryer at the scalp and the same dryer across the bathroom are, in field terms, almost different objects. The useful question is never whether an appliance emits, but how far away it stops mattering.
Electric field only — no current is flowing. Both fields present — which is why the two readings move independently.
How it works
Two sensors, three numbers, one comparison you make with your feet
1
Two sensors, sampled continuously
One element responds to the electric field and reports V/m; a separate element responds to the magnetic field and reports µT. They are flagged independently rather than merged into a single “EMF” score.
2
Averaged or peak
AVG smooths the signal over time, which is how international reference levels are written. VPP reports peak-to-peak, for catching the surge as a motor starts.
3
Compared against a cautious band
The onboard flag sits near 0.4 µT rather than the far higher regulatory ceiling. It is deliberately easy to trip: its job is to prompt a step back, not to declare a room unsafe.
The one habit that matters
Read at the appliance, then at arm’s length, then from where you actually sit or sleep. Three numbers instead of one turn the meter into an instrument.
How to use
Taking a reading worth trusting
🎚️
01
Switch to AVG
Stable enough to write down, and the form guideline levels are expressed in.
🧍
02
Hold it where you actually are
Head height beside a bed, seated height at a desk, cot-rail height in a nursery — not pressed against the device.
⏳
03
Let it settle
Give it a few seconds, then read again with the appliance switched off. The difference is that appliance’s actual contribution.
🚶
04
Walk it toward the source, then away
How fast the number climbs and collapses tells you where the source is and how far back you need to be. This is the whole reason to own the instrument.
Benefits backed by research
Where the 0.4 µT number comes from
The threshold built into this device is not a marketing figure. It traces to a specific, contested, still-open line of epidemiology.
📚
Two pooled analyses, 2000
Both teams found roughly a two-fold increase in childhood leukaemia among children whose long-term average exposure sat above 0.3 µT (Ahlbom) or 0.4 µT (Greenland), against children below 0.1 µT.
doi.org/10.1054/bjoc.2000.1376🔬
Still there in 2021, across 30 studies
186,223 participants. Odds of childhood leukaemia of 1.26 at 0.2 µT (CI 1.06–1.49), 1.22 at 0.3 µT (CI 0.93–1.61) and 1.72 at 0.4 µT (CI 1.25–2.35). The middle step is not statistically significant; the highest is.
doi.org/10.1371/journal.pone.0251628🚫
What the evidence does not show
WHO reports no consistent evidence that everyday exposure alters sleep or cardiovascular function, that hypersensitivity symptoms are caused by EMF, or that typical exposure raises the risk of miscarriage or birth defects.
who.int — EMF questions and answersThe association between childhood leukaemia and ELF magnetic fields is consistent enough to note, and too limited in strength and mechanism to be called causal. Paraphrased from WHO’s Environmental Health Criteria review — the sentence this product rests on, and the reason its claims stop where they do. IARC classified ELF magnetic fields Group 2B, “possibly carcinogenic”, on this basis in 2002.
For scale — published typical values
| Microwave oven | Washing machine | Hair dryer | Urban background | |
|---|---|---|---|---|
| Magnetic field | ~10 µT at 30 cm, up to ~70 µT at the casing | up to ~30 µT at surface | 6–20 µT at ~2.5 cm | 0.05–0.2 µT ambient |
Figures vary widely by model and by how much current is drawn at the moment of measurement — which is why your own readings are worth more to you than any table.
Why choose Tattwas?
Two numbers, shown working, with the limits stated
| Tattwas EMF Tester | Typical low-cost pen meter | Professional RF meter | |
|---|---|---|---|
| Measures | Electric and magnetic field, separately | Usually one field, often unlabelled | RF power density |
| Units shown | V/m and µT | Often an unnamed 0–100 scale | W/m² or mW/cm² |
| Averaging | AVG and VPP modes | Instantaneous only | Configurable |
| Basis of its threshold | Stated in this dossier, near the 0.4 µT precautionary figure | Rarely disclosed | ICNIRP RF reference levels |
| Temperature and work light | Both | Neither | Neither |
| Good for | Wiring, boards, motors, chargers, appliance sweeps | Rough presence-or-absence checks | Wi-Fi, handsets, base stations, 5G |
Scope note — please read before buying
This instrument measures low-frequency, power-frequency electric and magnetic fields: household wiring, switchboards, and the motors and transformers inside televisions, refrigerators and chargers.
It is not a substitute for a dedicated radiofrequency power-density meter, the instrument class used for Wi-Fi routers, mobile handsets and cell towers. If your question is about the router or the tower, this is the wrong tool and we would rather tell you now than sell you one.
Scientific evidence
The evidence, opened up
Every link goes to the primary source rather than to a summary of it.
1A pooled analysis of magnetic fields and childhood leukaemia
Ahlbom et al. — British Journal of Cancer, 2000. Nine studies pooled from individual records. Children with exposure at or above 0.4 µT had a summary relative risk of roughly 2.0; below it, estimates sat near no effect. The authors note the explanation is unknown.· Read source →
2A pooled analysis of magnetic fields, wire codes, and childhood leukemia
Greenland et al. — Epidemiology, 2000. The independent companion analysis, twelve studies, locating its threshold at 0.3 µT. With Ahlbom, the pair of papers underpinning the IARC 2002 evaluation.· Read source →
3Exposure to extremely low-frequency magnetic fields and childhood cancer
Seomun, Lee & Park — PLOS ONE, 2021 · open access. Thirty studies, 186,223 participants. Odds of 1.26 at 0.2 µT (CI 1.06–1.49), 1.22 at 0.3 µT (CI 0.93–1.61) and 1.72 at 0.4 µT (CI 1.25–2.35). A 2010 pooled analysis of post-2000 studies (Kheifets, BJC) found the same direction with wider uncertainty.· Read source →
4ICNIRP guidelines for limiting exposure to electric and magnetic fields
ICNIRP, 1998 (up to 300 GHz) and 2010 (1 Hz–100 kHz). Source of the 100 µT and 200 µT general-public reference levels at 50 Hz, and of the 5,000 V/m electric-field level — the ceilings that sit hundreds of times above this device’s flag.· Read source →
5WHO on hypersensitivity, pregnancy, sleep and base stations
World Health Organization — International EMF Project, and Environmental Health Criteria Monograph No. 238, 2007; IARC Press Release 208, 2011. The source for everything above headed “what the evidence does not show”, and for the Group 2B classifications of ELF fields (2002) and radiofrequency fields (2011).· Read source →
What a reading means
A high number beside a running appliance is normal and expected. A reading outside the “Good” band is a prompt to move back or reposition something — not a statement that a legal limit has been crossed, and not a statement about anyone’s health.
Important. The Tattwas EMF Radiation Tester is a consumer measuring instrument. It is not a medical device, it does not diagnose, treat, prevent or cure any condition, and it does not shield, block or alter electromagnetic fields. No reading carries any implication for any individual’s health. It is not certified for compliance testing or occupational assessment, and it does not measure radiofrequency sources such as Wi-Fi routers, handsets or base stations. If you have symptoms you associate with electronic devices, please speak to a qualified healthcare professional rather than relying on a meter reading.
Founder image
From our founder
“Whatever you see, touch, eat or drink… has an energy, and that energy is made from only 5 elements.”
Vishall
Founder, Tattwas
Founder, Tattwas
Good to know
FAQ
Everything you need before adding to basket.
Will this measure my Wi-Fi router or the tower on the neighbouring roof? +
No. Those are radiofrequency sources, measured as power density with a different class of instrument. This tester covers power-frequency fields from wiring and appliances.
Is EMF from household wiring proven to cause cancer? +
No. IARC classifies ELF magnetic fields Group 2B, “possibly carcinogenic” — the category for limited human evidence. WHO’s own review describes the childhood-leukaemia association as consistent but not established as causal.
My reading went above the “Good” band. Is my home unsafe? +
Almost certainly not in any regulatory sense. The onboard threshold sits near 0.4 µT, while the ICNIRP general-public reference level at 50 Hz is 100–200 µT — several hundred times higher. Treat the flag as a prompt to step back and re-measure.
I get headaches near electronics. Will this explain them? +
It will tell you what field strength is present; it cannot tell you what causes a symptom. Persistent symptoms are worth discussing with a doctor rather than with a meter.
Does the meter reduce or block anything? +
No. It measures. Nothing about owning it changes the fields in your home. The only reliable lever is distance, and the meter shows you how much is enough.
What is in the box? +
Three things: the EMF tester, a Type-C cable and the manual. No pouch and no adaptor — we would rather keep the price down than pad the box.
EMF Tester ·
Rs. 3,499
MRP Rs. 4,599
23% OFF
★★★★★ 4.6/5
Ancient elements, everyday wellness
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