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28 Bands Signal Blocker with Full Test Report – 28W, 2-25m Jamming Range, SGS Inspected, COC Available, OEM Supported 28 Bands Signal Blocker with Full Test Report – 28W, 2-25m Jamming Range, SGS Inspected, COC Available, OEM Supported
28 Bands Signal Blocker with Full Test Report – 28W, 2-25m Jamming Range, SGS Inspected, COC Available, OEM Supported 28 Bands Signal Blocker with Full Test Report – 28W, 2-25m Jamming Range, SGS Inspected, COC Available, OEM Supported
28 Bands Signal Blocker with Full Test Report – 28W, 2-25m Jamming Range, SGS Inspected, COC Available, OEM Supported 28 Bands Signal Blocker with Full Test Report – 28W, 2-25m Jamming Range, SGS Inspected, COC Available, OEM Supported
28 Bands Signal Blocker with Full Test Report – 28W, 2-25m Jamming Range, SGS Inspected, COC Available, OEM Supported 28 Bands Signal Blocker with Full Test Report – 28W, 2-25m Jamming Range, SGS Inspected, COC Available, OEM Supported

28 Bands Signal Blocker with Full Test Report – 28W, 2-25m Jamming Range, SGS Inspected, COC Available, OEM Supported

US$ 498.00 ~ 460.00
Min.Order: 1
Product origin: Shenzhen, Guangdong, China
Category: Electronics
Product Name: Electronics
Availability:In Stock
Product Review : 0 Reviews
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  • Frequency Range : 2345g WiFi GPS UHF VHF
  • Frequency : Audio
  • Application : Conference Center
  • Function : Jammer Signal
  • Usage : Secuity Equipment
  • Product Name : Signal Blocker
  • Blocker : Mobile Phone Signal Isolator; 2g+3G+4G+2.4G+Lojack
  • Power : 28W
  • Jammer Range : 2-25m
  • Power Supply : 28 Bands
  • Jammer : Full Bands Mobile Phone 5g/4G/3G/2g+WiFi2.4G+WiFi5
  • Band : 27 Antennas
  • Working Time : Built-in Battery Continues Working: a
  • Cooling System : High Efficiency Aluminum Alloy Radi
  • Product Size : 200X133X66mm (Without Antenna)
  • Transport Package : Box
  • Specification : plastic
  • Origin : China

—some spaces just can't have signals leaking out, and that's where this setup comes in.

It runs at 28W total, jams form roughly 2m to 25m depending on the enviornment, and covers 2G through 5G, GPS, WiFi bands, plus UHF and VHF.

What it does is block the rf noise you don't want in a conference center—pretty much all of it, including Lojack—and it's got 27 antennas to do the job (usually 2-4 weeks for a custom band configuration).

built-in battery keeps it running for about an hour and a half or so, and that alumnum alloy radiator actually stays cool enough to handle continuous use.

For ordering, the standard box packging works fine at 1pc MOQ, but bulk orders of 100pcs or so ship out in about 3 working days—just confirm lead time if you're outside standard spec.

It's SGS inspected and comes with COC plus COA on request, though you'll want to check the TDS yourself since we don't always have the export certifcate for every batch on hand.

Frequently Asked Questions

What is the actual jamming range for this 28-band blocker — is it always 25m or does it depend on something?

The 2-25m range depends on signal strength in your area. In a zone with weak signals, you'll get closer to 25m; near a cell tower, it drops to around 2m. Test it on-site to see real performance.

Do you need to install antennas for all 27 bands, or does it work with fewer?

You need to attach all 27 antennas for full band coverage. Each antenna handles a specific frequency, so skipping any means that band won't be blocked.

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

Battery life varies based on usage — typically 1-2 hours of continuous jamming. It's designed for short-term portable use, not all-day operation.

What docs come with the SGS inspection and COC you mentioned?

You'll get the SGS test report showing RF output and safety compliance, plus a Certificate of Conformance (COC) verifying the unit matches our specs. Both are provided before shipment.

Can we customize the frequency bands or packaging for bulk orders?

Yes, OEM is supported — we can adjust the frequency bands to your target region and put your branding on the box. Minimum order quantity for customization is typically 50 units.

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