ShenZhen Necom Telecommunication Technologies Co,.ltd
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Model :P21

Product Overview:

 21 Antennas Cell Phone Blocking Gps Lojack Wifi Cell Phone Signal  Jammer

The Signal Jammer is a device which deliberately transmits signals on the same radio frequencies as mobile phones, disrupting the communication between the phone and the cell-phone base station, effectively disabling mobile phones within the range of the jammer, preventing them from receiving signals and from transmitting them. Jammers can be used in practically any location, but are found primarily in places where a phone call would be particularly disruptive because silence is expected, such as entertainment venues.

1. Good cooling system, work 24 hours continuously.
2. Jamming range up to 30m,
3. Stable capability, cost-effective choice
4. Output power 21w, make more efficient jamming.
5. Eight channels with different frequency range,
or customize another cellular standard in the world.
Such as 450MHz,GPRS,iDEN,GPS,UMTS,WiFi,AWS,4G.

(1)Power supply: AC adapter (AC110-240V)
(2)Operate time: 1-2hours continuous
(3)Total output power: 21W
(4)Jamming range: up to 30m, the jamming radius still depends on the strength of the signal in the given area
(5)Antenna:21 pcs ( Please fix the antenna follow the mark in the unit)

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