产品描述: Table 2-1 Features Feature Description Physical dimensions ??1??71??1??778??1??71??1??775 Dimensions (L × W × H): 30 mm × 30 mm ×2.35 mm ??1??71??1??778??1??71??1??775 Weight: about 5 g Operating Bands (ME909u-521) LTE: FDD Band 1, 2, 3, 5, 7, 8, 20, all bands with diversity WCDMA/HSDPA/HSUPA/HSPA+: Band 1, 2, 5, 8, all bands with diversity GSM/GPRS/EDGE: 850/900/1800/1900 MHz GPS/GLONASS: L1 Operating Temperature Normal operating temperature: –20°C to +70°C Extended operating temperature[1]: –30°C to +75°C Storage Temperature –40°C to +85°C Moisture RH5% to RH95% Power Voltage DC 3.3 V–4.2 V (typical value is 3.8 V) AT Commands For ME909u-521, see the HUAWEI ME909u-521 LTE LGA Module AT Command Interface Specification.