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The SG-HJ-8 Multi Antennas Portable Jammer with Car Kit is a high-performance hand - hold cellphone signal isolator designed to effectively block 2G, 3G, 4G, 5G, WiFi, and Bluetooth signals. Engineered for versatility, it serves as a reliable solution for environments like conference centers, libraries, hospitals, gas stations, meeting rooms, and even in - car use, ensuring signal - free zones for privacy, focus, or safety.
### Key Features & Performance
Equipped with 8 antennas (SMA connectors), the SG - HJ - 8 covers a broad frequency range: 850/900/1800/2100/1900/2300/2400/2600/3300/4800MHz, enabling comprehensive signal blocking for modern communication standards. The shielding distance radius ranges from 1 to 20 meters, adjustable to suit your space requirements, with a shielding completion time of approximately 20 seconds for rapid activation.
### Power & Mobility
For stationary use, the jammer operates on 50~60 Hz, 100~240 V AC power. When on the move, its DC 12V service voltage (compatible with car kits) ensures seamless in - vehicle operation. The built - in battery offers 2 - 3 hours of standalone use, making it ideal for mobile or temporary setups. A cooling fan maintains optimal performance even in demanding conditions (-30°C to +55°C) with relative humidity tolerance of 25%~95%.
### Build & Customization
With compact dimensions (215X215X75mm) and a lightweight design (1.0kg), the SG - HJ - 8 is easy to carry and deploy. We offer OEM services (MOQ 50PCS) to print your brand logo, catering to wholesale and customized orders. A 2 - year warranty guarantees long - term reliability, backed by factory - direct supply for competitive pricing and quality assurance.
### Application Scenarios
This signal isolator excels in diverse environments: conference centers (maintain focus during meetings), libraries (quiet, distraction - free spaces), hospitals (prevent interference with medical equipment), gas stations (safety compliance), meeting rooms, cars, and more. Its multi - antenna design and broad frequency coverage ensure consistent, reliable signal blocking across all target bands.
Whether you need bulk orders for wholesale distribution, customized branding for your business, or factory - direct supply for projects, the SG - HJ - 8 Multi Antennas Portable Jammer delivers performance, flexibility, and durability. Contact us to discuss your requirements for this advanced signal isolation solution.
