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Quectel M66-DS (DUAL SIM) GSM/GPRS  Module, OpenCPU

Quectel M66-DS (DUAL SIM) GSM/GPRS Module, OpenCPU

Manufacturer: Quectel
Part No: M66DSFA-04-STD
Availability: In Stock

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M66DS Module Features

Power Supply

Single supply voltage: 3.3V ~ 4.6V
Typical supply voltage: 4V

Power Saving

Typical power consumption in SLEEP mode: 1.3 mA@DRX=5, 1.2 mA@DRX=9

Frequency Bands

Quad-band: GSM850, EGSM900, DCS1800, PCS1900
The module can search these frequency bands automatically
The frequency bands can be set by AT command
Compliant to GSM Phase 2/2+

GSM Class

Small MS

Transmitting Power

Class 4 (2W) at GSM850 and EGSM900
Class 1 (1W) at DCS1800 and PCS1900

GPRS Connectivity

GPRS multi-slot class 12 (default)
GPRS multi-slot class 1~12 (configurable)
GPRS mobile station class B


GPRS data downlink transfer: max. 85.6kbps
GPRS data uplink transfer: max. 85.6kbps
Coding scheme: CS-1, CS-2, CS-3 and CS-4
Support the protocols PAP (Password Authentication Protocol) usually used for PPP connections
Internet service protocols :  TCP/UDP/FTP/PPP/HTTP/NTP/PING
Support Packet Broadcast Control Channel (PBCCH)
Support Unstructured Supplementary Service Data (USSD)

Temperature Range

Operation temperature range: -35°C ~ +80°C

Restricted Operation: -40°C ~ -35°C and +80°C ~ +85°C
Storage temperature range: -45°C ~ +90°C


Support Bluetooth specification 3.0
Output Power: Class 1 (Typical 7.5dBm)


Text and PDU mode
SMS storage: SIM card

SIM Interfaces

Support SIM card: 1.8V, 3V

Support dual SIM dual standby

SD Interface

Only suppoprts 1bit serial mode

The data rate up to 48MHZ in serial mode

Audio Features

Speech codec modes:
Half Rate (ETS 06.20)
Full Rate (ETS 06.10)

Enhanced Full Rate (ETS 06.50/06.60/06.80)
Adaptive Multi-Rate (AMR)
Echo Suppression
Noise Reduction

Embedded one amplifier of class AB with maximum driving power up to 870mW

UART Interfaces

UART Port:
Seven lines on UART port interface
Used for AT command, GPRS data
Multiplexing function
Support autobauding from 4800bps to 115200bps
Debug Port:
Two lines on debug port interface DBG_TXD and DBG_RXD
Debug Port can used for firmware debugging

Used for AT command

Phonebook Management

Support phonebook types: SM, ME, ON, MC, RC, DC, LD, LA

SIM Application Toolkit

Support SAT class 3, GSM 11.14 Release 99

Real Time Clock


Physical Characteristics

Size: 15.8±0.15 ×17.7±0.15 ×2.3±0.2mm
Weight: Approx. 1.3g

Firmware Upgrade

Firmware upgrade via UART Port

Antenna Interface

Connected to antenna pad with 50 Ohm impedance control


Download Documents

M66-DS OpenCPU Development

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