Spy Microphones
Wall Microphone Instructions
Thank you for choosing our product. If you need assistance or have any questions, please don't hesitate to contact us. We'll be happy to help.
Description

The Wall Microphone is a professional tool designed to capture sound with great precision through materials such as cement, steel or pipes.
Thanks to its ultra-sensitive -60 dB probe and powerful audio amplification system of up to 13.000 times, it allows you to hear even the most subtle noises on the other side of a wall. Ideal for inspection, monitoring, or leak detection tasks, it offers very low power consumption (12 mA) and a battery life of up to 5 hours thanks to its 3,7 V lithium battery. It includes a 3,5 mm headphone jack for real-time listening.
A compact, efficient and highly specialized device for technical and surveillance uses.
Features
High pickup sensitivity (-60 dB): Detects subtle sounds with great precision for specialized monitoring.
Audio amplification up to x13000: converts minimal signals into clear, easily audible audio.
Penetrates various materials: Designed to pick up sound through pipes, cement, steel and other solid surfaces.
Low power consumption (12 mA): Ideal for extended sessions without compromising device efficiency.
Autonomy of up to 5 hours: Powered by 3,7V lithium batteries, ensures continuous operation without the need for external connection.
Listen in real time: Audio output via 3,5 mm jack connection compatible with included headphones.
versatile application: Perfect for technical inspection tasks, leak detection or covert listening in closed environments.
Portable and functional design: Compact, lightweight and easy to use in any professional or personal environment.
Content
1 – Wall Microphone
2 – Charging Cable
Instructions
Step 1 - Charging the device
- Connect the microphone to a USB power adapter (5V) using the included cable.
- The red LED will light up during charging and turn off once the battery is fully charged (approximately 2-3 hours).
Step 2 - Connecting the headphones
- Insert the headphones into the 3,5 mm jack port on the device.
- Make sure they are fully connected before turning on the appliance.
Step 3 - Turning on the microphone
- Turn the volume/power dial on the side of the device clockwise until you hear a click. This indicates the device is on.
- Adjust the volume by turning the same knob as needed.
Step 4 - Using the microphone
- Place the metal probe on the surface to be inspected (wall, pipe, etc.).
- If necessary, adjust the sensitivity or change surfaces until you get a clear acoustic signal.
- You can use the recording feature if your headphones support it and are connected to a compatible external recorder.
Step 5 - Power Off
Turn the volume knob fully counterclockwise until it clicks, indicating the device has turned off.
Thanks for your purchase!
We thank you for your trust in our products. If you experience any inconvenience during use, please do not hesitate to contact us.or feel free to contact us. In most cases, The incidents are due to incorrect use and not a manufacturing defect., so we will be happy to help you resolve it quickly and efficiently.
Frequent Problems
Why can't you hear it?
Low volume or low battery. Increase the volume. If this doesn't resolve the issue, recharge the device.
The audio sounds distorted or noisy, what's going on?
Excessively high volume or interference. Reduce the volume or change the probe's contact surface.
Why does the battery last so little?
Incomplete charge or degraded battery due to misuse. Fully charge the device with a 5V charger.
Security and Compliance
⚠ FAILURE TO FOLLOW THESE SAFETY INSTRUCTIONS MAY RESULT IN FIRE, ELECTRIC SHOCK, OR OTHER DAMAGE OR INJURY.
Below is indicated important product information in relation to the security and compliance that guarantee proper and safe use of the product.
WARNING
Do not use or store the product near other electronic equipment, as the magnetic field from adjacent electrical equipment will seriously damage or interfere with the product. Do not use this product if you have hearing problems, or if you use a hearing aid, pacemaker, or other electronic medical device.

® PingaOculto.
All rights reserved.
Product specifications:
Model Name: Wall Microphone
Model Number: F900B
Product identifier: 8463192846503
Electrical Rating: 60 mAh Lithium Battery
Operating temperature: 0 to 40ºC
Product Use
Do not expose your device or adapter to liquids. If your device or adapter gets wet, carefully unplug all cables without getting your hands wet and wait for the device and adapter to dry completely before plugging them back in. Do not attempt to dry your device or adapter with an external heat source, such as a microwave oven or hairdryer. If the device or adapter is damaged, discontinue use immediately. Use only the supplied accessories to power your device. To avoid the risk of electric shock, do not touch the device or any cables connected to it during a lightning storm. Cables and/or adapters are intended for indoor use only.
Legal Notice
PINGOC NOW SL is not responsible for fraudulent or misuse of the product due to a failure to understand or read the instructions and precautions. This product is not a toy and should not be used in a manner contrary to applicable laws. If you have any questions, please contact us.
For EU customers
Hereby, PingaOculto, declares that the type of radio equipment is in accordance with Directive 2014/53/EU.
Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
FCC Compliance
This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. The device has been evaluated to meet the general RF exposure requirement. The device can be used in portable exposure conditions without restrictions.
Radiofrequency Exposure Compliance
As a health protection measure, this device complies with the limits for exposure of the general public to electromagnetic fields in accordance with council recommendation 1999/519/EC. This device can be placed on the body avoiding prolonged use of it for more than 5 hours.
How to recycle your device properly
Disposal of certain electronic devices is regulated in some areas. Make sure you comply with local regulations and laws.
Additional safety and compliance information
For additional information on safety, recycling and compliance or other important issues related to your device, do not hesitate to contact us through any of the available means of contact. Means of contact with: Email contact@pingaoculto.com, Call/WhatsApp +34 644 098 320.
Limited Warranty
All official brand items PingaOculto have 2 year minimum warranty. This guarantee may be extended or reduced depending on the country where the sale takes place, as is the case by law in Spain where it is extended to 3 years as established by Decree-Law 7/2021 with respect to the Guarantee on the Sale of Goods. of consumption. We reserve the right to deny the guarantee of a product if improper or negligent use by the client is verified, similar to those reflected in: https://www.pingaoculto.es/garantias-y-devoluciones/.
If you need to contact us due to an error, you can do so by email: contact@pingaoculto.com or by Call/WhatsApp: +34 644 098 320.