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The differences that matter.
Compare emf meters by what they measure, how they record, and what they cannot tell you.
| Compare capabilities | Gigahertz Solutions HF35C RF Meter | Gigahertz Solutions HF38B RF Meter | Gigahertz Solutions HF59B RF Meter | Gigahertz Solutions HFE35C RF Meter Kit | Gigahertz Solutions HFE59B RF Meter Kit | Gigahertz Solutions HFEW35C RF Meter Kit | Gigahertz Solutions HFW59D RF Meter | Safe and Sound Pro II | FM5 Path 5G Monitor | TriField TF2 | Safe and Sound EM3 | EPE Conseil Cemprotec 34 EMF Meter | Dirty Electricity Line EMI Monitor |
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| Field types | — | — | — | — | — | — | — | RF only | RF only | RF, AC electric, AC magnetic | AC electric (1-axis), AC magnetic (3-axis), body voltage | RF, AC electric, AC magnetic | Line-conducted EMI ("dirty electricity") — not RF, electric or magnetic fields |
| Frequency range | 800 MHz - 2.7 GHz | 700 MHz - 3.3 GHz | 700 MHz - 3.3 GHz (extendable to 27MHz with UBB27 antenna, sold separately) | 27 MHz - 2.7 GHz (omnidirectional); 800MHz-2.7GHz (directional) | 27 MHz - 3.3 GHz (omnidirectional); 700MHz-3.3GHz (directional) | — | 2.4 GHz - 10 GHz, incl. 8.5-9.5GHz radar band | — | — | — | — | — | 10 kHz–10 MHz |
| Combined frequency range | — | — | — | — | — | 27 MHz - 6 GHz (via 2 meters) | — | — | — | — | — | — | — |
| RF coverage | — | — | — | — | — | — | — | 200 MHz–8 GHz detection | 1 MHz–10 GHz (Basic and Complete); 24–32 GHz mmWave module (Complete only) | 20 MHz–6 GHz | — | 1 MHz–10 GHz | — |
| Recording | — | — | — | — | — | — | — | Peak, maximum and average display | Peak/max signal on LED display; directional antenna and audio tone for source-finding | Manual recording; peak hold | Manual reading; body-voltage measurement via included cable | — | — |
| Accuracy (manufacturer) | +/-6dB linearity deviation | +/-6dB linearity deviation | — | +/-6dB linearity deviation | — | — | +/-4.5dB linearity deviation | — | — | — | — | — | — |
| Antenna | — | — | Directional Logarithmic Periodic (LogPer), 45deg | — | — | — | Directional Logarithmic Periodic (LogPer), 45deg | — | — | — | — | — | — |
| Antennas | — | — | — | Omnidirectional UBB27 (360deg) + Directional LogPer (45deg) | Omnidirectional UBB27 (360deg) + Directional LogPer (45deg) | — | — | — | — | — | — | — | — |
| Includes | — | — | — | — | — | HFE35C meter, HFW35C meter, 3 antennas, carrying case | — | — | — | — | — | — | — |
| Line noise range | — | — | — | — | — | — | — | — | — | — | — | — | 0.1–1999.9 mVp-p AC (differential); accuracy ±8% at 20 kHz–2 MHz, within a factor of 2 from 10 kHz–10 MHz |
| Sensitivity | — | — | — | — | — | — | — | — | Low-frequency module: 1 µW/m² to 100,000+ µW/m². High-frequency module: 30 µW/m² to 100,000+ µW/m² | — | — | — | — |
| Low-frequency coverage | — | — | — | — | — | — | — | — | — | — | — | 10 Hz–5 kHz (electric and magnetic) | — |
| Detection modes | Peak, Average; analogue + pulsed-digital | Peak Hold, Peak, Average; analogue + pulsed-digital | Peak Hold, Peak, Average; analogue + pulsed-digital | Peak, Average; analogue + pulsed-digital | Peak Hold, Peak, Average; analogue + pulsed-digital | Peak, Average; audio tone signal ID on both meters | Peak, Average, Peak Hold; audio tone signal ID | — | — | — | — | — | — |
| Sensitivity (manufacturer) | — | ~10x the HF35C; ~100x the entry-level HF32D | — | — | — | — | — | — | — | — | — | — | — |
| Measuring ranges | — | — | Coarse / Medium / Fine; DG20 attenuator optional | — | Coarse / Medium / Fine, plus DG20 attenuator included | — | — | — | — | — | — | — | — |
| Voltage reading | — | — | — | — | — | — | — | — | — | — | — | — | 85–250 VAC (±1 VAC); operates on 85–300 VAC, 50/60 Hz |
| Power | 9V alkaline battery included, ~6-7 hrs continuous use | 9V alkaline battery included, ~6-7 hrs continuous use | Rechargeable NiMH battery + charger included | 9V alkaline battery included | Rechargeable NiMH battery + charger included | 9V alkaline battery included | Rechargeable NiMH battery + charger included | — | 9V battery; approx. 50 mA on the low-frequency module, approx. 200 mA on the high-frequency module | — | — | — | — |
| Display | — | — | — | — | — | — | — | — | — | — | — | — | 4-digit yellow/blue two-colour OLED; audio tone scales with EMI intensity |
| Suggested reading guide | — | — | — | — | — | — | — | — | — | — | — | — | Below 25 mV: low. 25–50 mV: marginal. Above 50 mV: high (per manufacturer) |
| Starting price | $382.11 | $546.15 | $1,275.18 | $1,034.61 | $2,252.69 | $1,554.68 | $1,274.87 | $399.00 | £299.99 | £159.99 | $649.00 | £199.99 | £169.99 |
| Available from | Safe Living Technologies | Safe Living Technologies | Safe Living Technologies | Safe Living Technologies | Safe Living Technologies | Safe Living Technologies | Safe Living Technologies | Safe Living Technologies (retailer) | EMF Protection UK | EMF Protection UK, Safe Living Technologies (retailer) | Safe Living Technologies (retailer) | EMF Protection UK | EMF Protection UK |
| Limitations | Accuracy/linearity deviation is manufacturer-specified at +/-6dB. Maximum display resolution requires the external DG20 attenuator (sold separately) to read very strong signals. | Accuracy/linearity deviation is manufacturer-specified at +/-6dB. Maximum display resolution requires the external DG20 attenuator (sold separately) to read very strong signals. | This is the directional-antenna-only version of the HFE59B kit -- if you want the omnidirectional UBB27 antenna and the DG20 attenuator included rather than as separate purchases, compare pricing against the HFE59B kit directly. | Accuracy/linearity deviation is manufacturer-specified at +/-6dB. Runs on a single 9V alkaline battery (included). | This is a professional/technician-grade instrument, priced and specified accordingly -- most home users will get adequate coverage from a lower-tier meter (e.g. HF35C or HFE35C) unless you specifically need the omnidirectional antenna, the built-in attenuator, or data-logging output. | This is two separate meters in one case, not a single wideband instrument -- you switch between them depending on which frequency range you're checking. See the individual HFE35C and HFW35C listings for each meter's own accuracy spec. | Accuracy/linearity deviation is manufacturer-specified at +/-4.5dB -- typical for this class of professional RF analyzer, not a defect, but worth knowing when comparing readings across meters. A separate preamplifier (HV20_2400 G10) is needed for the lowest-signal sensitivity range and is sold separately. | Specified ±6 dB response covers 400 MHz–7.2 GHz. Does not measure low-frequency electric or magnetic fields. | Basic and Complete cover different frequency ranges — confirm which configuration you are ordering. Not returnable once satisfactory, only if faulty. The mmWave module draws roughly 4x the current of the low-frequency module, so battery life drops noticeably when it is in use. | RF and electric-field sensing are single-axis. Check orientation and the manual. | RF and wireless signals are not covered — pair with a dedicated RF meter (such as the Safe and Sound Pro II) for wireless-frequency questions. A rechargeable version is sold at the same price; confirm which you are ordering. | The Safe and Sound EM3 is a professional 3-in-1 EMF meter designed for accurate measurement of low-level AC magnetic and electric fields. Suitable for home and professional use, it offers wide frequency coverage, high sensitivity and third-party calibrated specifications. | Measures line-conducted electrical interference only — it does not measure RF, electric or magnetic fields, so it is not a substitute for a general EMF meter. No battery required; needs a free wall outlet to use. |
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Specification comparison, not a hands-on review. Current prices, shipping and returns must be confirmed with the provider.