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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.
Brisk delivery and impressive packaging marked the beginning of my experience. The logistics were handled with notable efficiency; the parcel arrived well ahead of the estimated schedule, which was a pleasant surprise. Every component was securely nestled within protective foam, demonstrating careful attention to shipping safety. Regarding the product's quality, the build feels robust and durable. The casing is solid, with no loose parts or flimsy construction, suggesting good manufacturing standards. The antennas are firmly attached and feel like they can withstand regular handling. As for service, the supplier was communicative and professional. They provided clear tracking information and promptly acknowledged the order confirmation. While I haven't tested the device's technical capabilities in a live environment yet, the initial unboxing and inspection based on physical attributes are positive. The overall presentation and the smooth transactional process contribute to a satisfactory procurement experience from a wholesale perspective. The product arrived as described in the listing, with all advertised accessories included. This efficient handling from warehouse to doorstep, combined with the tangible solidity of the unit and responsive seller support, forms a strong foundation for the business transaction. The process was straightforward and devoid of complications, which is paramount for bulk purchasing considerations.
Smooth and swift delivery was the first thing I noticed; the package arrived well ahead of the estimated schedule, which was a fantastic start. The product itself feels solid and well-constructed, with a reassuring weight and finish that suggests good durability. Customer service was responsive and polite when I had a pre-shipping inquiry, providing clear answers promptly. Overall, a very satisfactory purchasing experience from logistics to the tangible quality of the item and the support received.
Prompt delivery and excellent packaging ensured the product arrived in perfect condition. The shipping was remarkably fast, arriving well ahead of the estimated schedule, which was a pleasant surprise. Communication from the seller was clear and proactive throughout the entire process, providing timely updates. The build quality of the unit itself feels robust and solid, suggesting good durability. While I cannot comment on its operational specifics, the overall presentation and the materials used appear to be of a high standard. The customer service team was responsive and helpful when I had a pre-sale inquiry, answering all my questions thoroughly and politely. This combination of efficient logistics, apparent quality construction, and supportive service made for a very satisfactory purchasing experience. The item was securely packed with ample protective materials, showing great care in handling. From order placement to delivery, everything was handled professionally and smoothly.
