Repeater1.(1)use:  indoor ,to expand the cellphone signal where the signal is weak or unavailable.(2)recommeding reazon:where there is cellphone,there need booster,because the weak signal problem is so common in everywhere now.(3)characteristics:high quality(we are long term manufacture for telecommunication operator and professional provider ) ;  lowest price in this industry(because we are in large batch producing and the labor cost is low); ·Your cellphone will have very good signal after you install the booster! 2.coverage :27dbm : about 2000 sq.m.23dbm : about 1500 sq.m.20dbm : about 800~1200 sq.m.17dbm : about 500~800 sq.m.10dbm : about 200~300 sq.m. 3.You can choose the outputpower and frequency:(1)outputpower can be:10dbm,17dbm,20dbm,23dbm,27dbm,30dbm,33dbm,37dbm,40dbm,43dbm,46dbm. (2)frequency can be:GSM900MHz,DCS1800MHz,WCDMA(3G),CDMA850MHz,CDMA450MHz,CDMA1900MHz,IDEN,EGSM,BLUETEETH,GPS and so on. 4.we can provide technic support for you and send engineers to your country for installing and service! 5.When you install you need the following things:(1)booster;(2)the accessories including one outside antenna ,one inside antenna and cable. ·picture for this booster kit:  6.Technical Features:ItemTE-4101Frequency   Range    (Mhz) customer appointGain (dB)Downlink :55~90dbUplink :50~85dbOutput Power  (dBm)10dbm,17dbm,20dbm,23dbm,27dbm,30dbm,33dbm,37dbm,40dbm,43dbm,46dbmALC≥20 dBOuter-band Dispel<-40dBmIsolation>60dBStanding wave≤1.35 dBTri-rank intermodulation≤-40dBc(PO=20dBm/CH/2CH)band flatness≤+3dBRelay PhoneGSM  Install MethodsLay/ Hang top(Indoor)Power supplyAC220V(Expert AC-DC Convertor)(Facility Power Supply:DC+5V)Size103.5x123.6x31.6mmWeightApprox.  500gFittingsDC+27Vpower adapter ; InstructionHigh-reliabilityComply with GB6993-86 standardElectromagnetic CompatibilityComply with ETS300 609-4 standard