Hwaniora BG01 Adjustable Frequency Generator

Adjustable: The Hwaniora BG01 frequency generator is listed with a default 7.83 Hz setting and a tunable range from 0.01 Hz to 200,000 Hz. It offers three waveform outputs, plus a detector and wired headphones for checking operation, but the claimed room coverage is conditional on placement and surroundings.

At a glance

Three listed output patterns: sine, square and inverse square.
Frequency adjustment includes a 7.83 Hz default and a range up to 200,000 Hz.
The manufacturer lists a Schumann wave detector and wired headphones as operation-checking options.
The stated working range is up to 5 m when placed at the recommended height, with performance said to depend on setting and surroundings.

Price

£30.59Save 15%

Reference price: ~~£35.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Broad listed frequency adjustment and three waveform choices offer flexibility for signal experiments.
Detector and wired headphones provide two stated ways to check the device's operation.
USB Type-C connectivity is specified for plug-and-play operation.

Technical specifications

12 specifications

Identity
Brand	Hwaniora
Model	BG01

Frequency and outputs
Adjustable frequency range	0.01 Hz to 200,000 Hz
Default setting	7.83 Hz
Waveform outputs	sine, square, and inverse square wave patterns
Preset options	10 Hz, 40 Hz, 174 Hz, 285 Hz, 396 Hz, 417 Hz, 432 Hz, 528 Hz, 639 Hz, 741 Hz, 852 Hz, 963 Hz, and more

Power and connections
Connectivity	USB Type‑C
Batteries included	No

Dimensions and installation
Weight listed	220 g
Package dimensions	17.5 x 16.2 x 3.2 cm; 220 g
Recommended placement height	3.3–4.9 ft (1–1.5 m)
Claimed working range	up to 16.4 ft (5 m)

What to know before buying

The stated range of up to 5 m is conditional on positioning the unit 1–1.5 m high. The listing says effectiveness may decrease in noisy places or after intense activity, and suggests two units for large rooms or open areas.

Listing details to confirm

Listing details are inconsistent: package dimensions are given as 17.5 x 16.2 x 3.2 cm, while the feature text gives device dimensions of 5.9 x 5.5 x 1.2 inches. It also calls operation USB Type-C but says no batteries are required without clarifying the power arrangement. Confirm the physical dimensions and power setup for your intended use.

What’s in the box

Included

Schumann wave detector
Wired headphones

Who is it for?

A good fit for

Buyers wanting an adjustable-frequency generator with several waveform choices.
Users who want the listed detector and wired headphones for checking operation.
Small-room users able to follow the stated placement guidance and account for ambient noise.

Less suited to

Buyers needing clearly specified battery-powered operation or a settled device-size measurement.
Users needing reliable coverage across large or noisy spaces from a single unit.

Hwaniora BG01 Adjustable Frequency Generator · photo 2 — Additional product photo 2

Customer reviews on Amazon

3.9 / 5 · 88 ratings

5 stars62%62%
4 stars5%5%
3 stars13%13%
2 stars4%4%
1 star16%16%

Aggregate customer ratings are mixed overall, with five-star ratings forming the largest share but a substantial one-star share as well. Without review-summary evidence, the reasons for those ratings are unknown. Buyers should treat the frequency range, waveform choices and coverage as listing claims rather than conclusions supported by the ratings.

Frequently asked questions

What frequency range is listed for the Hwaniora BG01?

The listing states 0.01 Hz to 200,000 Hz, with 7.83 Hz as the default setting and additional presets.

Which waveforms does it produce?

The manufacturer lists sine, square and inverse square wave patterns.

What is included?

The stated included components are a Schumann wave detector and wired headphones. The listing also says the generator uses USB Type-C, but does not clearly explain its power arrangement.

How far away is it claimed to work?

The listing claims a working range of up to 5 m when positioned 1–1.5 m high. It says performance can decline in noisy places and suggests two units for large rooms or open areas.