Product information


IoT/M2M-optimized Cat.1 LTE Module

Quectel EC21 is a series of LTE category 1 module optimized specially for M2M and IoT applications. It features costeffective, low power LTE connectivity, and delivers M2Moptimized speeds of 10Mbit/s downlink and 5Mbit/s uplink. These make EC21 an ideal solution for numerous IoT applications that are not reliant on high speed connectivity but still require the longevity and reliability of LTE networks.

EC21 is compatible with Quectel UMTS/HSPA+ UC20 module and multi-mode LTE EC20/EC25 module in the compact and unified form factor. It contains 10 variants: EC21-E, EC21-A, EC21-V, EC21-AUT, EC21-AUTL, EC21-AUV, EC21-J, EC21-KL, EC21-AU and EC21-CT. This makes it backwardcompatible with existing EDGE and GSM/GPRS networks, ensuring that it can easily migrate from LTE to 2G or 3G networks.

EC21 supports Qualcomm® IZat™ location technology Gen8C Lite (GPS, GLONASS, BeiDou, Galileo and QZSS). The integrated GNSS greatly simplifies product design, and provides quicker, more accurate and more dependable positoning.

A rich set of Internet protocols, industry-standard interfaces and abundant functionalities (USB drivers for Windows XP, Windows Vista, Windows 7, Windows 8/8.1, Windows 10, Linux, Android/eCall*) extend the applicability of the module to a wide range of M2M and IoT applications such as smart metering, wearable devices, environmental monitoring, asset tracking, fleet management, security and alarm systems, and so on.

Key Benefits

  • Cost-effective, lower-power LTE connectivity optimized for broadband IoT applications
  • Worldwide LTE, UMTS/HSPA+ and GSM/GPRS/EDGE coverage
  • Multi-constellation GNSS receiver available for applications requiring fast and accurate fixes in any environment
  • Feature refinements: supports DFOTA*, eCall*, QuecLocator and DTMF
  • MIMO technology meets demands for data rate and link reliability in modem wireless communication systems

General Characteristics

  1. Frequency BandsEC21-E:LTE FDD: B1/B3/B5/B7/B8/B20WCDMA: B1/B5/B8GSM: B3/B8EC21-A:LTE FDD: B2/B4/B12WCDMA: B2/B4/B5EC21-V:LTE FDD: B4/B13EC21-AUT:FDD LTE: B1/B3/B5/B7/B28WCDMA: B1/B5EC21-AUTL:FDD LTE: B3/B7/B28EC21-AUV:LTE FDD: B1/B3/B5/B8/B28WCDMA: B1/B5/B8EC21-J:LTE FDD: B1/B3/B8/B18/B19/B26EC21-KL:LTE FDD: B1/B3/B5/B7/B8EC21-AU:LTE FDD: B1/B2/B3/B4/B5/B7/B8/B28LTE TDD: B40WCDMA: B1/B2/B5/B8GSM: B2/B3/B5/B8EC21-CT:LTE FDD: B1/B3/B5
  2. LTE Version3GPP E-UTRA Release 11
  3. Bandwidth1.4/3/5/10/15/20MHz
  4. AntennaSupports Rx-diversity
  5. Supply Voltage Range3.3V~4.3V, 3.8V Typ.
  6. Operation Temperature-40 °C ~ +85 °C
  7. Size L/W/H32.0 x 29.0 x 2.4mm
  8. PackageLCC
  9. WeightApprox. 4.9g
  10. Control via AT commands3GPP TS27.007 and enhanced AT Commands


  1. DataLTE:LTE-FDD Max 10Mbps (DL) Max 5Mbps (UL)
    DC-HSPA+:Max 42Mbps (DL) Max 5.76Mbps (UL)UMTS:Max 384Kbps (DL) Max 384Kbps (UL)EDGE:Max 236.8Kbps (DL) Max 236.8Kbps (UL)GPRS:Max 85.6Kbps (DL) Max 85.6Kbps (UL)Speech Codec Modes:HR,FR,EFR,AMR,AMR-WB
  2. VoiceEcho Arithmetic:Echo CancellationNoise Reduction
  3. eCall*Accident, Emergency Services
  4. VoLTEDigital Audio and VoLTE (Voice over LTE) (Optional)

Special Features

  1. DriversUSB Serial:Windows XP, Windows Vista, Windows 7, Windows 8/8.1, Windows 10, Linux 2.6 or later, Android 4.0/4.2/4.4 /5.0/5.1/6.0RIL:Android 4.0/4.2/4.4/5.0/5.1/6.0NDIS:Windows XP, Windows Vista, Windows 7, Windows 8/8.1, Windows 10ECM:Linux 2.6 or laterGobinet:Linux 2.6 or laterLinux qmi wwan:Linux 3.4 or later
  2. DFOTA:*Firmware updated via the air
  3. BT4.0*/WiFi:Optional

Electrical Characteristics

  1. Output PowerClass 3 (23dBm±2dB) for LTE FDDClass 3 (23dBm±2dB) for LTE TDDClass 3 (24dBm +1/-3dB) for UMTSClass E2 (27dBm ±3dB) for EDGE 850/900MHzClass E2 (26dBm +3/-4dB) for EDGE 1800/1900MHzClass 4 (33dBm ±2dB) for GSM 850/900MHzClass 1 (30dBm ±2dB) for GSM 1800/1900MHz
  2. Consumption20uA @Power off3mA @Sleep, Typ.22mA @Idle
  3. SensitivityLTE B1: -101.5dBm (10M)LTE B2: -101dBm (10M)LTE B3: -101.5dBm (10M)LTE B4: -101dBm (10M)LTE B5: -101dBm (10M)LTE B7: -99.5dBm (10M)LTE B8: -101dBm (10M)LTE B12: -101dBm (10M)LTE B13: -100dBm (10M)LTE B20: -102.5dBm (10M)LTE B28: -102dBm (10M)UMTS B1: -110dBmUMTS B2: -110dBmUMTS B4: -110dBmUMTS B5: -110.5dBmUMTS B8: -110.5dBmGSM: -109dBmDCS: -109dBm


  1. USB 2.0 DeviceHigh Speed, 480Mbps
  2. PCM×1, Digital Audio through PCM Interface (Optional)
  3. USIM1.8V/3V
  5. UART×1, UART
  6. RESETActive Low
  7. PWRKEYActive Low
  8. AntennaPads for Primary, Rx-diversity and GNSS
  9. ADC×2


  1. ApprovalFCC/CE*/CCC*/SRRC*/NAL*/PTCRB*/AT&T*/GCF*/Verizon*/RCM*/Telstra*/JATE&TELEC*
  • * Under development
    EC21 - IoT/M2M-optimized Cat.1  LTE Module

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