ขาย Tri-band signal booster 2G, 3G, 4G, GSM 900 + DCS / LTE 1800 (3 band) + UMTS / WCDMA 2100 (1 band) 1/3/8 Tri-band 4g Lte ราคาที่ดีที่สุด

Product parameter information Brand | Easy Light (Mobile Unicom Telecom 2G4G Internet access) Model | EK91-GDW| Frequency|900/1800/2100 Output power 20±2dBm | Gain 65+2dBm Power DC 12V 2A Working temperature -10℃~55℃℃ Weight 0.8KG Size 210*185*20MM Product introduction of mobile phone signal amplifier: This product can be used in non-signal areas such as mountainous areas, urban areas, towns, urban villages, underground warehouses, basements, and underground parking lots. The function is to pull stable outdoor signals into (absorb) indoors, and then amplify and spread the signals to the entire effective area to provide stable and high-quality signals for devices that need signals. Please note before buying: 1). Please confirm that the carrier base station frequency band of your sim card is suitable for the effective frequency of this device 2). Please make sure that you can receive the good signal you want to amplify outside the house. You can display 3-5 bar signals on the phone (at least capture 70dB-90dB), otherwise the signal amplifier cannot improve your signal installation method 1) Fix the outdoor antenna on the roof or outside the window and point it towards the signal tower. 2) Connect the outdoor antenna to the "BTS" port of the repeater through a cable. 3) Plug the power adapter into an AC power outlet. 4) Please adjust the direction of the outdoor antenna until the signal booster has a good signal. This is very important. 5) Connect the indoor antenna to the "MOBILE" port of the repeater. 6) Please ensure that there is at least 10 meters between the outdoor and indoor antennas, with a wall in between, but not on the same horizontal line.