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Portable Handheld UHF 4 Bands Signal Jammer

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Portable Handheld UHF 4 Bands Signal Jammer

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  • Portable Handheld UHF 4 Bands Signal Jammer
  • Portable Handheld UHF 4 Bands Signal Jammer
  • Portable Handheld UHF 4 Bands Signal Jammer
  • Portable Handheld UHF 4 Bands Signal Jammer
  • Portable Handheld UHF 4 Bands Signal Jammer

Product Description

This portable handheld UHF (customized 300-500MHz) 4-band signal jammer, small meeting rooms, can be applied at  mobile meetings, private meetings, mobile command vehicles, churches, mosques, offices, cars, trains, buses, boats, yachts, hotels, Portable use in homes, villas, etc. Small & light, portable design, convenient to carry and use.


Affected Frequency Ranges:

  1.  UHF radio(1): 300-350MHz
  2. UHF radio(2): 350-400MHz
  3.  UHF radio(3): 400-450MHz
  4. UHF radio(4): 450-500MHz
  • Antenna: 4pcs omnidirectional antennas      
  • Jamming Radius: about 10m, still depends on the signal strength in given area
  • Jamming Objects: UHF radio, UHF walkie-talkie, remote control (433MHz), other wireless devices using frequency bands between 300-500MHz
  • Single output power: +30dBm /1W 
  • attery Type: Built-in 7.2V 3000mAh Li-ion battery, can continuously work for about 1.5 hours on a full charge
  • Power Supply(Charger): AC Charger(Input: AC100-240V) & Car Charger(DC12-24V car cigarette lighter)
  • Dimension: 110*62*30 mm (excluding antennas)
  • Working Temperature: -40 to +55℃
  • Relative humility: ≤90%(RH)
  • Air pressure: 86~106kPa
  • Colour: Black
  • Weight: 300g


  • main unit * 1
  • Antenna  * 4
  • AC charger  * 1
  • Car charger(plug into car cigarette lighter port)  * 1

​Operation Instruction & Precautions

*take out the device
*screw the antennas to the right position according to the labels of numbers (otherwise the jammer can not work)
*turn on power switch, and then all DIP switches, the channel indicators under the power switch light up, then it is working.
*When the shielding range decreases, it indicates that the battery is about to run out, please charge it in time. 
(When charging, the charging indicators on the AC charger and the device will light red; After fully charged, the charging indicators will turn green).
*since the valid scope covered by the jammer is a round area with the jammer as the center, put the jammer in the center place if possible to achieve a better shielding effect.
*please keep away strong electromagnetic sources with heat sources to ensure good shielding effect and stable operation for a long time.
*please don’t use it for a long time by continuous charging, otherwise the battery life will be shorten.
*after use, please switch off the device in time to avoid affecting the normal use of the phone.
*while using it outdoors, be sure to keep it away from water or damp.
*keep away from caustic gases and liquids, and be sure to make it dust-proof and moisture-proof, lest the aging of the components inside should be accelerated.

This product is in stock now, we guarantee shipping within 48 hours and offer 1 year warranty for all our products. Brought to you by the leader in security devices and best Signal Jammers, Jammerall.

Important Notes for Jamming Distance: The jamming distances we mentioned on website are for customer's reference only. The actual jamming distance will be varied depending on the signal strength and the use location and if full charges, etc.

Important Notes for Portable Jammers with No Cooling Fan: Do not use the jammer when it is charging, or it will burn the jammer as it has no built-in fan. If because of this factor due to the broken of the jammer, the customer will lose the authority of free repairation .

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Product Reviews

  1. hihi Review Rating

    Posted by Labinot Gjyrevcy on 9th Dec 2021

    I ordered the device the portable handheld UHF 4 bands signal jammer, up to now almost 2 years, still the outstanding performance.I like it.
    Thank you.

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