VT-811 Advanced Non-Linear Junction Detector for High-End Privacy Protection
Product Overview
The VT-811 Advanced Non-Linear Junction Detector is an advanced security device that integrates wireless signal detection capabilities. It can detect hidden electronic eavesdropping and surveillance devices in packages, walls, floors, ceilings, lamps, furniture, or containers. The VT-811 can alert via sound or vibration and simultaneously use its wireless signal detection unit to quickly capture signals being transmitted and received, indicating the location of suspicious electronic devices on the screen. This effectively improves the efficiency of security checks and protects the privacy and security of businesses and individuals.
Technical Principle
The device transmits a fundamental frequency in the S-band while receiving second and third harmonic frequencies generated by the target object. Artificial intelligence algorithms analyze these harmonic patterns to identify whether there are suspicious electronic products within the detection area. Additionally, differential detection principles are used to exclude interference from distant signal sources, enabling effective detection of nearby suspicious wireless signals.
Application Scenarios
- Corporate Commercial Secret Protection: Detect unauthorized electronic devices hidden in important meeting rooms or confidential offices, such as eavesdropping devices, mobile phones, and devices containing SIM cards.
- Advanced Corporate Security and Facility Audits: Detect Unauthorized electronic components and remote controls in sensitive areas.
- Personal Privacy Protection: Detect hidden audio and video recording devices in residential areas, hotels, etc., such as voice recorders and cameras.
Product Highlights
- Completely Domestic: Fully domestically developed with proprietary intellectual property rights, ensuring high security and independence from foreign technology import restrictions.
- Strong Semiconductor Recognition: Supports second and third harmonic detection, allowing for quick and effective identification of devices containing semiconductors.
- High Wireless Signal Recognition: Can detect 5G signals at 2.6GHz, 3.5GHz, and 4.9GHz, displaying alerts.
- High Sensitivity: Equipped with a high-gain antenna, it has a long detection range, particularly for devices containing SIM cards.
- Low False Alarm Rate: Features built-in lossless detection algorithms that significantly improve detection capabilities and minimize false alarms.
- Flexible Operation: Compact size and easy-to-use operation, providing an excellent user experience.
- High Cost-Effectiveness: Offers a high cost-performance ratio, saving costs while maintaining excellent performance.
Authoritative Certification
The product complies with the Public Security Ministry’s industry standard GA1236-2015 for Nonlinear Junction Detectors. It has passed the quality inspection of the National Quality Supervision Inspection Center for Safety and Alarm Systems (Beijing) and the Public Security Ministry’s Quality Inspection Center for Safety and Security Professionals Electronics, with a testing report issued.
Product Specification
| Parameter | Technical Specifications |
| Product Working Band | 2.4 GHz |
| Operating Voltage | 7.4 V |
| Frequency Range | 2.4 GHz – 2.5 GHz |
| Reception 2nd-3rd Harmonic Range | 4.8 GHz – 5.0 GHz |
| 7.2 GHz – 7.5 GHz | |
| Pulse Mode Transmission Power (Max.) | 4 W (EIRP) |
| Reception Sensitivity | ≤ -125 dBm |
| Detection Distance | GPS Module: 400 mm – 500 mm |
| Cell Phone: 150 mm – 220 mm | |
| SIM Card: 25 mm – 33 mm | |
| Wireless Signal Strength Detection | Can detect the strength of wireless signals emitted by suspicious devices and issue audio and light alarms. |
| Wireless Signal Directional Localization | Can identify and indicate the direction of wireless signals emitted by suspicious devices. |
| Supported Signal Types | GSM, WCDMA, CDMA2000, TD-SCDMA, LTE, LTE-A, 5G, Bluetooth, Wi-Fi |
| Supported Frequency Range | 50 MHz – 6000 MHz |
| Signal Reception Sensitivity | -50 dBm |
| Battery Type | Replaceable lithium battery, single battery operation time is two hours. |
| Charging Time | Fast charge 2.5 hours/block |
| Interface | LCD display shows reception harmonic signal strength and signal type |
| Supports audio prompts (distinguishable between non-linear and signal detection), supports headphones | |
| Non-linear part supports vibration prompt | |
| Product Dimensions | 750 mm x 114 mm x 108 mm |
| Outer Case Dimensions | 700 mm x 330 mm x 180 mm |
| Product Weight | < 1.6 kg |
| Operating Temperature | -30°C to 55°C |
