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Wholesale Customizable Multi Antennas Portable Jammer SG-HJ-8, Hand-Hold Cellphone Signal Isolator for Conference & Car Use Wholesale Customizable Multi Antennas Portable Jammer SG-HJ-8, Hand-Hold Cellphone Signal Isolator for Conference & Car Use
Wholesale Customizable Multi Antennas Portable Jammer SG-HJ-8, Hand-Hold Cellphone Signal Isolator for Conference & Car Use Wholesale Customizable Multi Antennas Portable Jammer SG-HJ-8, Hand-Hold Cellphone Signal Isolator for Conference & Car Use
Wholesale Customizable Multi Antennas Portable Jammer SG-HJ-8, Hand-Hold Cellphone Signal Isolator for Conference & Car Use Wholesale Customizable Multi Antennas Portable Jammer SG-HJ-8, Hand-Hold Cellphone Signal Isolator for Conference & Car Use
Wholesale Customizable Multi Antennas Portable Jammer SG-HJ-8, Hand-Hold Cellphone Signal Isolator for Conference & Car Use Wholesale Customizable Multi Antennas Portable Jammer SG-HJ-8, Hand-Hold Cellphone Signal Isolator for Conference & Car Use

Wholesale Customizable Multi Antennas Portable Jammer SG-HJ-8, Hand-Hold Cellphone Signal Isolator for Conference & Car Use

US$ 150.00 ~ 120.00
Min.Order: 1
Product origin: Foshan, Guangdong, China
Category: Electronics
Product Name: Electronics
Availability:In Stock
Product Review : 3 Reviews
Infringement complaint:
* Please contact the supplier via whatsapp first before placing an order
  • Model NO. : SG - HJ - 8
  • Frequency Range : 2G 3G 4G 5G WiFi Bluetooth
  • Frequency : 850/900/1800/2100/1900/2300/2400/2600/3300/4800MHz
  • Application : Conference Center, Library, Hospital, Gas Station
  • Antenna : 8 Antennas with SMA Connectors
  • Power Supply : 50~60 Hz, 100~240 V AC
  • Completion of Shielding Time : About 20 Seconds
  • Shielding Distance Radius : 1 ~ 20 Meters
  • Service Voltage & Car Use : DC 12V
  • Work Temperature : -30 Celsius ~ +55 Celsius
  • Dimensions : 215X215X75mm
  • Weight : 1.0kg
  • Warranty : 2 Years (Included)
  • OEM Service : MOQ 50PCS (Print Your Brand Logo)
  • Cooling System : Cooling Fan
  • Built - in Battery Working Time : 2 - 3hours

You’re tired of spotty signal blackout zones where one device still rings or pings through—this unit handles that with eight antennas on SMA connectors covering 850/900/1800/1900/2100/2300/2400/2600/3300/4800MHz, so 2G through 5G plus WiFi and Bluetooth get hit.

SG - HJ - 8 Multi Antennas Portable Jammer with Car Kit

It takes about 20 seconds to reach full shielding from cold start, and the radius runs 1 to 20 meters depending on environment and signal strength—concrete walls drop it toward lower end, we’ve seen that in field tests.

SG - HJ - 8 Jammer Antennas and Design

Runs off AC 100-240V at 50-60Hz or a car’s DC 12V, and the built-in battery gives you 2-3 hours of cordless operation (usually enough for a conference session or a road trip). Operating temp is -30 to +55°C, so it handles hot trunks and cold service vehicles fine, but don’t expect it to work well near gas station pumps or hospital MRI suites—different shielding issues.

We do OEM branding at 50 units minimum—your logo printed, no mold fees, roughly 20-25 working days for the first batch after art approval. Warranty is two years included, and we’ll send a COA with HPLC purity data for teh internal components if you ask.

SG - HJ - 8 Jammer in Car Kit Setup

Payment terms are typically 30% deposit, 70% before shipment for first orders; T/T or L/C at sight works. Shippng weight is about 1.0kg per unit, dimnesions 215x215x75mm, we usually ship via DHL or FedEx for small lots—10-14 days door-to-door to most major cities.

SG - HJ - 8 Jammer Specifications and Details

Also, the cooling fan kicks in automatically under heavy load—you’ll hear it after about 15 minutes of continuous use, nothing unusual, but good to know if you’re setting it in a quiet room.

Frequently Asked Questions

What is the shielding distance radius for the SG-HJ-8 jammer?

The shielding distance radius ranges from 1 to 20 meters, depending on signal strength and environment. In open areas with average signal, you'll typically get around 15-20 meters, but in strong signal zones it may drop to 1-5 meters.

Can I get the SG-HJ-8 with my own brand logo on it?

Yes, we offer OEM service with a minimum order quantity of 50 pieces. You can print your brand logo on the device.

How long does the built-in battery last on a full charge?

The built-in battery provides 2 to 3 hours of continuous operation. It's designed for portable use, like in a car or conference room without a power outlet.

What certifications or quality documents come with this jammer?

We provide a warranty card, test reports, and a CE certificate upon request. The device is tested for stability within the specified temperature range of -30°C to +55°C.

Does the SG-HJ-8 come with antennas included, and are they removable?

Yes, it includes 8 antennas with SMA connectors, and they are fully detachable. This makes it easy to transport or replace if needed.

Q***J 2026-01-13

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.

T***M 2026-01-03

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.

J***U 2025-12-11

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.

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