... 2) Low interference to BTS 30dbm GSM wide band repeater / signal booster for cell phones:1) Output 30dbm, gain 85db, works on ... Compact size, low comsumption, easy installation, cover about 5000-20000m2, high linear dsign, low interference to BTS.5) Multiple phones and ... a building can benefit from a wireless repeater, extended phone battery life.6)LED light working and signal condition indicators.7) ...