I just received my hy929. the instructions are so very vague. not enough as to know what to do. are there more instructions some place else?

Dear friend Hi again Please first charge the device for about 5 hours. when you plug in the charger, the device's red indicator lights up, and when the charging is complete, the red indicator lights out. Normally when you rotate the locator of the device, the device will turn on, and then you can hear the sound,(If it still has no sound,please replace another earphone to try). Please make sure the microphone and earphone plugs are fully plugged into the device. Insert them firmly and make sure the plugs are in good contact. Please note a very important technique to use: When you put the round microphone close to the wall or the door, be sure to keep your hand still. don't move anything, Otherwise it makes noise because the microphone is very sensitive. it needs a highly sensitive microphone to hear what's going on inside the walls,please understand. You just need to keep your hand still and then it can work well Please try again carefully. if have questions,please tell me Thank you very much Deng

hola sirve para escuchar a traves de las paredes?

Hola! Puede oír voces fuera de la pared, con un espesor aproximado de 10 cm. Gracias

Can this be connected to a recording device?

I didn’t get a recording device with mine

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Enhanced Version Super Sensitive Listen Thru-Wall Contact/Probe Microphone Amplifier System

Enhanced Version Super Sensitive Listen Thru-Wall Contact/Probe Microphone Amplifier System

Product ID: 218582465

Details

Recommended Uses For Product
Surveillance
Brand
suqua
Connectivity Technology
Auxiliary
Connector Type
3.5 mm Jack
Special Feature
Amplification

🎧Headphone Compatible

📏Compact 259g Handheld Design

🔊60 dB Signal-to-Noise Ratio

Description

🔍 Hear What Others Won't—Unlock Hidden Conversations Instantly!

LIGHTWEIGHT PORTABLE - At just 259g, carry discreetly for on-the-go surveillance or curiosity.
PLUG AND PLAY SIMPLICITY - Corded electric power with headphone compatibility—no batteries, no hassle.
PRECISION VOLUME CONTROL - Easily adjust amplification to avoid earbud discomfort and capture every whisper.
OMNIDIRECTIONAL SENSITIVITY - 360° vibration detection ensures no conversation goes unnoticed.
CRYSTAL CLEAR THROUGH WALL AUDIO - Amplifies subtle vibrations through wood, steel, and glass for unmatched clarity.

The Enhanced Version Super Sensitive Listen Thru-Wall Contact/Probe Microphone Amplifier System is a handheld, corded device designed to amplify audio vibrations through various barriers like wooden walls, steel plates, and glass. Featuring a 60 dB signal-to-noise ratio and omnidirectional sensor, it delivers clear sound via headphone compatibility. Lightweight and easy to use, it offers adjustable volume control for precise listening without discomfort, making it ideal for discreet audio monitoring in professional or personal settings.

Specifications

ASIN	B07FLGZ18V
Audible Noise	0.17 Decibels
Best Sellers Rank	#188,865 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #243 in Sound Measurement
Box Contents	Amplifier
Brand	NaFurAhi
Brand Name	NaFurAhi
Compatible Devices	Headphone
Connectivity Technology	Auxiliary
Connector Type	3.5 mm Jack
Customer Reviews	3.8 out of 5 stars 621 Reviews
Frequency Range	20 hz 20 khz
Global Trade Identification Number	00738595112494
Included Components	Amplifier
Manufacturer	no
Manufacturer Part Number	d
Microphone Form Factor	Handheld
Model Name	8541737392
Model Number	8541737392
Number of Channels	1
Polar Pattern	Omnidirectional
Power Source	Corded Electric
Signal-to-Noise Ratio	60 dB
UPC	738595112494

Reviews

H**N

Brilliant for finding water leaks

5.11.2022

A**Z

Bueno para tuberías

Bueno para monitorear tuberías

9.01.2026

C**N

fonctionne pas vraiment

grésillement seulement

13.01.2021

C**G

It is super sensitive

13.10.2022

A**E

Titel ist erforderlich

Das Ding ist OK, aber die Einstechsonde scheint nicht zu taugen...

1.05.2025

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