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Mobile Bulk SMS Sending Device 3G 4G 5G To 2G Downgrade Emergency Rescue Mass Events

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October 23, 2025
Category Connection: Bulk SMS Sending Device
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Tags:
#SMS Broadcast Machine #Communications Management System #Communication Control System
Brief: Discover the Mobile Bulk SMS Sending Device, designed for emergency rescue and mass events. This device supports 3G/4G/5G to 2G frequency downgrading, enabling efficient SMS transmission via 2G protocols. Ideal for high-density areas, it features multi-carrier support, high registration speed, and a robust range of 200-500m.
Related Product Features:
  • Supports multi-carrier multi-standard simultaneous framing and 3G/4G/5G to 2G frequency downgrading.
  • Capable of acquiring surrounding IMSI for enhanced information collection.
  • Editable SMS transmission with a limit of 400 English or 150 Chinese characters per message.
  • High registration speed of 200 numbers/minute in densely populated areas.
  • SMS success rate exceeds 40% with a throughput of over 1000 messages/hour.
  • Operates within a range of 200-500m, ideal for emergency and mass events.
  • Powered by an Android smartphone app with Wi-Fi connectivity.
  • Compact and portable with dimensions of 350mm x 280mm x 160mm and weight under 12 kg.
Faqs:
  • What frequency bands does the Mobile Bulk SMS Sending Device support?
    The device supports various frequency bands including B1, B3, B5, B8, B28, B20, B7, B39, B3 B40, B38, B41, and N78, with variations depending on the country.
  • How long can the device operate on a single battery charge?
    The device has a battery endurance of at least 1.5 hours on a single battery, with an operating voltage of DC 21V ~ 30V.
  • What is the range of the Mobile Bulk SMS Sending Device?
    The device has a range of 200-500m in single direction, depending on public network signal strength (≈ -90dBm).
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