Signal blocker Narara | how does a signal blocker work
Product Description Low or no mobile signal inside your room forces you to make calls while leaning out a window? Stuck in a 2 year contract but can’t use your phone at home or work? Miss loads of calls because you have to leave your phone in one place to get signal? Well no longer with the worldwide use GSM 850MHz/1900MHz Cell Phone Signal Booster How does it work? Shortly, this Cell Phone Signal Booster introduces a revolutionary. The patent-pending technology captures low-signals from outside and brings it inside, enhances/boosts it, then extends that signal back out to create a large, high-signal cell phone zone. To prove it works perfectly, our product tester locked him inside a metal shipping container coated with aluminum foil. His cell phone was left with 0 bars, but what happened when we turned on the Cell Phone Signal Booster? You got it - full bars and a perfect signal. What is it used for? This Cell Phone Signal Booster is usually used in an area of the country where cell phone signals are normally weak, or locations where signals may be hard to reach, like basements, car parks, and tunnels. Due to its coverage area of up to 800 square meters, this Cell Phone Signal Booster has also found tremendous popularity in large areas owned by private businesses such as supermarkets, cinemas, hotels, airports, etc. When you are in a normally low-signal zone, buying a new cell phone won’t do anything. What you need is this Cell Phone Signal Booster (Dual Band 850MHz/1900MHz) for maximum bars and excellent reception. It even includes everything you need to get it up and it is suitable for mobile networks worldwide (dual band 850/1900MHZ). At a Glance... Instantly boost your cell phone signals! Dual band GSM (850MHz/1900MHz) for worldwide use Up to 800 square meter working range Comes ready to go - no need for anything extra! Powerful solution at an affordable price Specifications Frequency range: -Up link GSM 824-849/PCS1850-1910(MHz) -Downlink GSM 869-894/PCS1930-1990(MHz) Coverage: 500-800m2 (Distance will be reduced when obstacles are in the way i.e. surrounding walls) Gain (dB): -GSM/PCS Up link 50/45 -GSM/PCS Downlink 50/45 Output Power (dBm) ≥17dB Pass Band Ripple: GSM 10dB PCS: 15dB Guard Band Rejection: -GSM (BW-60dB) -PCS (BW-60dB) -I/O Return Loss -Noise Figure: Intermodulation Attenuation (PO = 13dBm) >= 40dBc Transmission Delay: Ambient Temperature: -10 degree 50 degree C Power supply: AC110～220V 45～55Hz Dimensions: Signal Booster: 160 x 121 x 22 mm (L x W x D) Certification: CE, FCC, RoHS Product Notes Long range cell phone signal booster! Up to 800 square meters! This device is for GSM 850and 1900 MHz signals only. Please check frequency your country uses before purchasing Note:Please be clear about which frequency you want to boost. You must check your local Mobile Frequency range and choose the booster as per your required Frequency. Please check your country’s Mobile Frequency here. http://worldtimezone.net/gsm.html
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