- The Cell Phone Signal Booster supports GSM900 ,it works with GSM/EGSM 900MHz 2G network,it supports any wireless operator in the frequency range of 890 ~ 915MHz and 935 ~ 960MHz.   It could only strengthen cell phone signal, could not produce cell phone signal,if there is no cell phone signal at all in your area,there is no need to use it.
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<br />Specification:
<br />Frequency range : 
<br />890MHz--915MHz(Up link)
<br />935MHz--960MHz(Down link)
<br />Power: -70 ~-40 dBm/ FA (1.23MHz)
<br />Gain : Uplink 50/55/60/65Db/±10DB         
<br />          Donwlink 55/60/65/70Db±10DB
<br />Signal coverage:Up to cover for 150-200 square meters use
<br />Impedance : 50   
<br />Seclusion  : &amp;gt;65 db 
<br />Power supply : AC110/220V(Used AC/DC Adapter 12V DC)
<br />Compact design: Indoor use
<br />Item dimension : 105 x 85 x 20 mm 
<br />
<br />Package Include:
<br />1 x Aluminium LCD DISPLAY GSM 900 cellphone repeater 
<br />1 x Omni direction outdoor antenna with 10 meters cable
<br />1 x Indoor antenna
<br />1 x Charger 
<br />1 x User manuall<p> <b><b><img src="https://contestimg.wish.com/api/webimage/5975af26d36e70508718cb83-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/5975af26d36e70508718cb83-1-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/5975af26d36e70508718cb83-2-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/5975af26d36e70508718cb83-3-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/5975af26d36e70508718cb83-4-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/5975af26d36e70508718cb83-5-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/5975af26d36e70508718cb83-6-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/5975af26d36e70508718cb83-7-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/5975af26d36e70508718cb83-8-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/5975af26d36e70508718cb83-9-large.jpg></b></b></p>