With cable+antenna,1000 square meters work,GSM booster,GSM repeater,900Mhz booster,GSM signal booster,GSM signal repeater Full set GSM970 900MHZ ... product : 1. 1000 square meters suitable .2. GSM booster;3. 900mhz booster;4. Model 970 .5. 20 meters of cable ... not good or bad. With cable+antenna,1000 square meters work,GSM booster,GSM repeater,900Mhz booster,GSM signal booster,GSM signal repeater