Many places especially the testing rooms are strictly prohibit from using cell phones in order to avoid cheating. With this Durable Cell Phone Signal Jammer, supervision works will be much easier. Having two RF frequency channels, you have the chance to choose from RF Frequency 1 850-894MHz, 925-960MHz, 1805-1990MHz, 3G (America Market Frequency) and RF Frequency 2 869-894MHz,925-960MHz, 1805-1880MHz, 3G (Europe Market Frequency), and finally get the optimal one. This cell phone signal jammer can be controlled by an infrared remote control, which can help you operate it easily and conveniently. What's more important is that this cell phone jammer has a large jamming radius which is up to 20 - 40 meters depending on the strength and type of cellular system. So this 50m signal jammer can be used in many big occasions, such as conference room, church, classroom, bank etc.. Long distance cell phone signal jammer can last for working for 3 to 4 days.This cell phone signal jammer also has an excellent performance on other locations where secret and quiet are requested absolutely. Best choice for you!Specifications:Bocker All: GSM、CDMA、PHS、PCS、DCS、3G、IDEN、UMTS、AMPSRF Frequency 1: 850-894MHz, 925-960MHz, 1805-1990MHz, 3G (America Market Frequency)RF Frequency 2: 869-894MHz, 925-960MHz, 1805-1880MHz, 3G (Europe Market Frequency)Isolation signal frequency: - CDMA: 850-894MHz - GSM: 925-960MHz - DCS: 1805-1880MHz - PHS or CDMA1900: 1900-1930MHz or 1930-1980MHz - 3G: 2110-2170MHzTotal Transmission Output: 10 WattShielding Radius:20M－40M (depend on installing places)Power supply: AC adapterRules of installation: UL (E190582) CSA (LR 112971 Level 3)Remote control: Can up and down the power, Can open and close the JammerWork time: After12 hours, need close for 20 minutes,then open it, work well
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