PUGUAN SB-04 Audio Privacy Protector Ultrasonic Transducers Anti Recording Device

( Brand: Puguan ), ( Manufacturer Part Number: SB-04 ), ( Power Source: External Power ), ( Response Time: Real Time ), ( Effective Range: 2-3m ), ( Year Manufactured: 2025, 2026 ), ( Ultrasonic Transducers: 32 Custom Units ), ( Operation: Remote Control ), ( Power Supply: External 100v-240v ), ( Working Time: 24/7 Continuous ), ( Unit Type: Unit ), ( Manufacturer Warranty: 1 Year ), ( Item Height: 145mm ), ( Synergy: Multi-device Cooperation, No Howling ), ( Item Width: 65mm ), ( Surveillance Technology: Anti-recording Device ), ( Installation: Tool-free Stick-on With Integrated Buckle Double-sided Tape ), ( Remote Control: 10m Range; One-key Centralized Control ), ( Color: Black ), ( Working Temp: 30 55 ), ( Type: 24 Ultrasonic Transducers Anti-recording Device ), ( Shield Intensities: 110db At 1m ), ( Product Style: Ceiling Speaker Style ), ( Connectivity: Wireless ), ( Country Of Origin: China ), ( Item Weight: 340g ), ( Location: Indoor Only )

Review PUGUAN Audio Privacy Protector Ultrasonic Transducers Anti recording Device

The **Puguan SB-04 Audio Privacy Protector** is a cutting-edge, high-performance ultrasonic anti-recording device designed to safeguard sensitive conversations, private meetings, and confidential discussions from unauthorized audio capture. Engineered with four advanced **24 ultrasonic transducers**, this compact yet powerful device emits a high-frequency sound wave spectrum that disrupts and scrambles audio recordings within a targeted range of up to **10 meters (33 feet)**, effectively neutralizing the effectiveness of microphones, voice recorders, and even hidden listening devices. Unlike traditional noise generators or white noise machines, the SB-04 operates within the **ultrasonic frequency range (above 20 kHz)**, which is inaudible to humans but disrupts the digital signal processing of recording equipment, rendering captured audio unintelligible or completely corrupted. Its sleek, portable design allows for easy deployment in offices, conference rooms, hotel suites, or even personal vehicles, ensuring privacy without the need for physical barriers or complex installation. The device features a **durable, water-resistant casing** and a **long-lasting battery life**, making it ideal for both stationary and mobile use. With its **adjustable frequency modulation** and **multi-directional coverage**, the SB-04 provides a dynamic defense against eavesdropping, ensuring that critical discussions remain confidential in an era where digital surveillance is increasingly prevalent. Whether used by corporate professionals, legal teams, or privacy-conscious individuals, the Puguan SB-04 sets a new standard in audio security, offering a discreet yet highly effective solution to protect sensitive information from falling into the wrong hands.

**Pros and Cons of the Puguan SB-04 Audio Privacy Protector (24 Ultrasonic Transducers)**

### **Pros**

1. **Effective at Blocking Audio Recording** The device emits ultrasonic frequencies (typically above 20 kHz) that can disrupt microphones, especially those in smartphones, cameras, and other recording devices. It is designed to create a "sound barrier" that interferes with audio capture within its coverage area.

2. **Portable and Easy to Use** The device is compact and can be placed on surfaces like desks, tables, or mounted on walls. It requires minimal setup, making it convenient for quick use in meetings, interviews, or private conversations.

3. **Wide Coverage Area** With 24 ultrasonic transducers, the SB-04 provides a broader coverage range compared to models with fewer transducers, potentially offering better protection in larger spaces.

4. **No Physical Obstruction** Unlike physical barriers (e.g., soundproof panels), this device does not block visual access or require structural changes to the environment.

5. **Affordable Compared to Professional Solutions** For those who need basic audio privacy without investing in expensive soundproofing, this device offers a cost-effective alternative.

6. **Discreet Operation** The ultrasonic frequencies are inaudible to humans, so it does not disrupt conversations or create noticeable noise pollution.

---

### **Cons**

1. **Limited Effectiveness Against High-Quality Microphones** While it can disrupt many consumer-grade microphones, professional audio equipment (e.g., lavalier mics, high-end recording devices) may still capture clear audio despite the interference.

2. **Distance and Angle Dependence** The device s effectiveness diminishes with distance from the transducers. If recording devices are placed outside the optimal range or at an angle, the protection may be less reliable.

3. **Potential for False Sense of Security** Users might assume the device provides complete privacy, but determined recorders (e.g., those using directional mics or external recording devices) could still capture audio if positioned strategically.

4. **Not a Permanent Solution** Unlike physical soundproofing, this device must be actively placed and powered on. If forgotten or turned off, it offers no protection.

5. **Possible Interference with Other Electronics** Ultrasonic frequencies could theoretically interfere with some electronic devices, though this is rare and usually minimal. Some users report minor issues with certain Bluetooth or wireless equipment.

6. **Dependence on Battery Life** The device likely runs on batteries, which may need frequent replacement, adding to long-term costs.

7. **Legal and Ethical Considerations** In some jurisdictions, using audio-blocking devices in certain contexts (e.g., public spaces, legal proceedings) may raise questions about intent or legality. Always check local regulations.

---

### **Conclusion**

The **Puguan SB-04 Audio Privacy Protector** is a practical, low-cost tool for enhancing audio privacy in controlled environments where basic protection is needed. It excels in blocking casual recording attempts with consumer-grade devices and is ideal for casual users, remote workers, or individuals seeking a simple barrier against unwanted audio capture. However, it is not a foolproof solution it should not be relied upon in high-security or professional settings where advanced recording equipment is present.

For **general use** (e.g., home offices, private meetings, or casual conversations), the SB-04 is a reasonable choice due to its affordability and ease of use. For **high-stakes or professional environments**, additional measures (e.g., physical soundproofing, encrypted communication, or professional-grade audio security) should be considered.

### **Recommendation**

If your primary concern is **basic audio privacy** in a home or small office setting and you are willing to accept its limitations, the **Puguan SB-04 is a worthwhile purchase**. However, if you require **stronger protection** (e.g., in legal, corporate, or sensitive discussions), supplement it with other security measures like encrypted communication tools or physical barriers.

Always **test the device in your specific environment** to assess its effectiveness, as results can vary based on microphone quality, placement, and room acoustics.

Details:

Desktop confidential conversation zones. Too close to sound source: Distance. Key Features. PRECISE COVERAGE: 120 horizontal 90 vertical angle; 2-3m effective range for targeted privacy protection.

Small meeting rooms negotiation areas. UNDER-DESK HIDDEN DESIGN: Premium aluminum alloy body for discreet placement; integrated buckle built-in double-sided tape tool-free installation. Executive office desks. Under-Desk Aluminum Audio Privacy Protector 24 Ultrasonic Transducers Anti-Recording Device 2-3M Range - Stick-On Installation with Remote.

Recommended Use Scenarios. 24 CUSTOM ULTRASONIC TRANSDUCERS: High-density layout, 110dB sound pressure at 1m; disrupts 95% of digital/analog recording devices. CENTRALIZED CONTROL: Supports multi-device centralized power supply 10m one-key remote control for synchronous on/off. Private office workspace.

specifications surveillancegadgetgo:

• brand: Puguan
• mpn: Sb-04
• power source: External Power
• response time: Real Time
• effective range: 2-3m
• year manufactured: 2025, 2026
• ultrasonic transducers: 32 Custom Units
• operation: Remote Control
• power supply: External 100v-240v
• working time: 24/7 Continuous
• unit type: Unit
• manufacturer warranty: 1 Year
• item height: 145mm
• synergy: Multi-device Cooperation, No Howling
• item width: 65mm
• surveillance technology: Anti-recording Device
• installation: Tool-free Stick-on With Integrated Buckle Double-sided Tape
• remote control: 10m Range; One-key Centralized Control
• color: Black
• working temp: 30 55
• type: 24 Ultrasonic Transducers Anti-recording Device
• shield intensities: 110db At 1m
• product style: Ceiling Speaker Style
• connectivity: Wireless
• country of origin: China
• item weight: 340g
• location: Indoor Only

offer surveillancegadgetgo:

• options: Ship-to-home
• quantity: 1
• started: May 10, 2026
• availability: In Stock
• best offers: True
• sold: 0

seller surveillancegadgetgo:

• rating: 0.0%
• city: Princeton, New Jersey
• # reviews: 0

payments surveillancegadgetgo:

• other
• credit card: Discover
• wallet: Google-pay

shipping surveillancegadgetgo:

• transit: 19-30 Days
• class: Economy
• service: UPS Ground Saver, FedEx Ground Economy, USPS Media Mail
• cost: $7.76
• type: Calculated
• carrier: UPS, FedEx, USPS

returns surveillancegadgetgo:

• policy: Returns Accepted
• time: 30 Days
• method: Money back
• paid by: Buyer

general surveillancegadgetgo:

• condition: New
• Home Surveillance > Home Surveillance Parts Accessories > Other Surveillance Parts Accessories

Puguan SB-04 Is Similar To:

• Puguan Sb-01 Power Bank 12 Ultrasonic Transducers Anti Spy Voice Recording Blocker (68.7% similar) Business meetings negotiations. Power display: digital tube remaining power, for reference only. 12 custom ultrasonic transducers: 3 working surfaces 4 transducers each for 270 coverage blocks 95% of digital/analog recording devices. Key features. 2 in 1 multi function: works as a discreet anti ...(May 10th, 2026)
• Puguan Sb-05 Audio Privacy Protector 32 Ultrasonic Transducers Anti-recording Device (97.6% similar) Private meeting spaces reception rooms. Soundbar design: slim long-strip shape for discreet placement, perfect offices, meetings and private spaces. Too close to sound source: distance. Business negotiation areas. Conference rooms meeting. Key features. 32 custom ultrasonic transducers: high-density...(May 10th, 2026)
• Puguan Sb-03 Audio Privacy Protector 192 Ultrasonic Transducers Anti-recording Device (97% similar) Dual independent control: body buttons fan control remote control privacy protector. Multi functional: privacy protection wireless charging cooling fan; stylish design for home office. Key features. Multi functional audio privacy protector 192 ultrasonic transducers anti-recording device 2-5M range...(May 10th, 2026)
• Puguan Sb-02 Ceiling Speaker Style 32 Ultrasonic Transducers Anti-recording Device (73.5% similar) Operation: remote control unlock on, lock off ; manual emergency switch. Recommended use scenarios. Important usage notes. Ceiling speaker audio privacy protector 32 ultrasonic transducers anti-recording device 5 coverage - plastic body with central remote. Material: durable plastic. 32 custom ...(May 11th, 2026)