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  • Quectel Uc20 Modem 3g Serial Interface Rs232 Wireless Data Transmission Kit
  • Quectel Uc20 Modem 3g Serial Interface Rs232 Wireless Data Transmission Kit
  • Quectel Uc20 Modem 3g Serial Interface Rs232 Wireless Data Transmission Kit
  • Quectel Uc20 Modem 3g Serial Interface Rs232 Wireless Data Transmission Kit
  • Quectel Uc20 Modem 3g Serial Interface Rs232 Wireless Data Transmission Kit
  • Quectel Uc20 Modem 3g Serial Interface Rs232 Wireless Data Transmission Kit
Quectel Uc20 Modem 3g Serial Interface Rs232 Wireless Data Transmission Kit
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Quectel Uc20 Modem 3g Serial Interface Rs232 Wireless Data Transmission Kit

  • 1 - 19 Units
    $66
  • 20 - 99 Units
    $61
  • >= 100 Units
    $56
View product details

Quectel Uc20 Modem 3g Serial Interface Rs232 Wireless Data Transmission Kit

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Multi-Protocol Wireless Communication: Supports GSM, GPRS, WCDMA (3G), and 4G LTE for versatile data transmission across diverse networks.
  • RS232 Serial Interface: Enables seamless connectivity to legacy or industrial devices requiring serial communication.
  • External Antenna Design: Enhances signal reception and transmission for stable wireless performance in challenging environments.

Key features

  • 1. Corrosion-Resistant Metal Construction

    • With a corrosion-resistant metal body, ensure durability in harsh environments compared to plastic models*.

  • 2. RS-232 Interface & LED Monitoring

    • With a RS-232 interface and LED status indicators, monitor and connect seamlessly to legacy systems, offering easier integration than USB-only modems*.

  • 3. High-Speed 3G Performance

    • With 3G network support, achieve ~20% faster data transmission than 2G models*, while a wide 5V-35V power input ensures operation in diverse environments*.

  • 4. Multi-Protocol Versatility

    • With support for GSM, GPRS, and WCDMA protocols, deploy in various scenarios like industrial automation and commercial networks*.

  • 5. Certified Multi-Protocol Compliance

    • Certified for multi-protocol compatibility (GSM/GPRS/WCDMA), ensuring adherence to global communication standards*.

Product details

Quectel Uc20 Modem 3g Serial Interface Rs232 Wireless Data Transmission Kit

The Quectel UC20 Modem is a versatile 3G wireless data transmission kit designed for reliable communication across diverse environments. Equipped with an RS-232 interface and an external antenna, it supports GSM, GPRS, and WCDMA protocols, offering seamless integration into industrial and commercial systems. Its robust metal construction and wide power supply range (5V–35V) ensure durability and adaptability, while LED indicators provide real-time status monitoring.

Technical specifications

FeatureSpecificationBenefit
Antenna TypeExternalEnhanced signal strength and flexibility
InterfaceRS-232 SerialDirect connectivity to legacy systems
Network Support3G (WCDMA), GSM/GPRSBroad compatibility with cellular networks
Power Supply5V–35V DCUniversal deployment in varied power environments
LED IndicatorsPWR (Power), RING, DATAReal-time status monitoring
DesignModular, metal casingRugged durability and EMI shielding

Customization guide

Adjustable parameters include:

  • Power Input Range: Customize voltage tolerance for specific power sources (e.g., solar panels or industrial batteries).
  • Antenna Mounting: Optimize antenna placement for signal optimization in challenging environments.
  • Interface Expansion: Integrate additional ports (e.g., USB) via modular design for future-proofing.

Get inspired

The Quectel UC20 Modem empowers industries like IoT, M2M, and remote monitoring with reliable 3G connectivity. Its RS-232 interface simplifies legacy system upgrades, while its rugged design ensures performance in harsh conditions.

Choose your model

ParameterBase Model (UC20)Advanced Model (UC20-4G)Pro Model (UC20-PRO)
Data Transfer Rate3.1 Mbps (3G)100 Mbps (4G LTE)300 Mbps (4G LTE-Advanced)
Power Supply Range5V–35V5V–40V5V–48V
Connectivity OptionsRS-232RS-232 + USBRS-232 + USB + Ethernet
Antenna TypeExternalExternal + InternalHigh-Gain External

Supplier's note

  1. Key Technical Breakthroughs:

    • Wide Power Range (5V–35V): Enables deployment in off-grid or industrial settings without voltage converters.
    • RS-232 Interface: Simplifies integration with legacy systems, reducing migration costs.
    • Modular Design: Supports customization for niche applications like vehicle telematics or remote sensors.

  2. Version Selection Guide:

    • Base Model (UC20): Ideal for basic 3G connectivity needs (e.g., asset tracking).
    • Advanced Model (UC20-4G): Choose for faster data speeds (20% faster than 3G) and dual interface support (e.g., fleet management).
    • Pro Model (UC20-PRO): Best for high-throughput applications like live video streaming or industrial automation, with 50% higher power tolerance than industry benchmarks.

With the Pro Model’s 300 Mbps data rate, you can handle real-time video feeds in smart cities. The Base Model’s rugged metal casing ensures reliability in mining or agriculture, while the Advanced Model’s dual interfaces streamline IoT gateway setups.

Frequently asked questions

  • Which Quectel modem is best suited for 3G-based industrial IoT applications?

  • How do I clean and maintain the external antenna of the Quectel Uc20 Modem?

  • Is the Quectel Uc20 Modem compatible with legacy systems using RS232 interfaces?

  • Can the Quectel Uc20 Modem be customized for specific industrial applications?

  • What power supply options does the Quectel Uc20 Modem support?

  • How does the RS232 interface enhance data transmission in the Quectel Uc20 Modem?

  • Why does the Quectel Uc20 Modem use an external antenna for 3G connectivity?

  • What do the LED indicators on the Quectel Uc20 Modem signify?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Communication ProtocolsIndustrial IoT, M2M, Remote MonitoringIndustry Standard: 2G/GPRS (256 kbps)
Base: 3G (HSPA+ 42 Mbps)▲
Advanced: 4G LTE (Cat 4, 150 Mbps)▲▲ (300% faster)		Base: Reliable for moderate data (e.g., sensor networks)
Advanced: Supports HD video and real-time analytics		Base: Limited for high-bandwidth apps
Advanced: Requires LTE coverage
Power Supply RangeMobile Field Ops, Off-grid SystemsIndustry: 9-36V
Base: 5-35V▲ (IEC 60950-1)
Advanced: 5-48V▲▲ (supports industrial equipment)		Base: Works with USB/low-voltage devices
Advanced: Compatible with heavy machinery		Advanced may need voltage regulators for extreme ranges
Interface TypeLegacy Systems IntegrationIndustry: RS-232 only
Base: RS-232 (115.2 kbps)▲
Advanced: RS-232 + USB 2.0▲▲ (dual interface)		Base: Direct compatibility with legacy systems
Advanced: Adds USB for modern devices		Base lacks USB flexibility
Advanced requires dual-cable setups
Antenna TypeOutdoor DeploymentsIndustry: Internal
Base: External (gain: 2dBi)▲
Advanced: External (5dBi)▲▲ (30% stronger signal)		Base: Better signal than internal designs
Advanced: Ideal for rural/remote areas		External antennas require mounting hardware
Data HandlingReal-Time TelemetryIndustry: Basic logging
Base: 100KB/s▲ (ISO/IEC 17025)
Advanced: 1MB/s▲▲ (10x faster throughput)		Base: Sufficient for sensor data
Advanced: Handles high-res imaging/video		Base may lag in dense data environments
Physical DesignSpace-Constrained InstallationsIndustry: Plastic enclosures
Base: Metal (IP54)▲
Advanced: Metal (IP67)▲▲ (dust/waterproof)		Base: Durable for moderate environments
Advanced: Survives harsh conditions		Advanced may add bulk compared to plastic alternatives

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