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![Bulk SMS Device with Quectel EC25 Module 4G LTE 16 Port USB Interface SMS STK IMEI Change Bulk SMS Device with Quectel EC25 Module 4G LTE 16 Port USB Interface SMS STK IMEI Change](/theme/my/iskra/106625-bulk_sms_device_with_quectel_ec25_module_4g_lte_16_port_usb_interface_sms_stk_imei_change.jpg)
modem (5)
Working Frequencies : *EC25-E FDD-LTE 2100/1800/850/2600/900/800
Mhz B1/B3/B5/B7/B8/B20 TDD-LTE 2600/2300/2500
Mhz B38/B40/B41 WCDMA : 2100/850/900
Mhz B1/B5/B8 GSM : 900/1800 B8/B9 *EC25-A FDD-LTE 1900/1700/700
Mhz B2/B4/B12 WCDMA : 1900/1700/850
Mhz B2/B4/B5 *EC25-AUT FDD-LTE FDD LTE : 2100/1800/850/2600/700
Mhz B1/B3/B5/B7/B28 WCDMA : WCDMA : 2100/850
Mhz B1/B5. (3)
USB Port Interface.(1) 16 Ports 4
G Modem Pool. (2)
Based on Quectel EC25 Module. (4)
Support SMS/STK/USSD/IMEI Change/AT Command.