M66 Quectel Development Board Description
The Quectel M66 is an ultra-compact quad-band GSM/GPRS (2G) module that measures just 15.8 × 17.7 × 2.3 mm, making it one of the smallest options available in its class. It uses LCC castellation packaging with surface-mount technology, which simplifies automated soldering, supports high-volume manufacturing with strict cost and efficiency demands, and enables durable, rugged designs suitable for embedding into space-constrained products.
Built on the latest 2G chipset, the M66 delivers optimal performance for SMS, GPRS data transmission, and audio/voice services—even in harsh or challenging environments—while offering reliable connectivity overall. Its compact form factor is combined with low power consumption and an extended operating temperature range, making it particularly well-suited for battery-powered or demanding M2M/IoT scenarios.
M66 Quectel Development Board Features
- Extremely compact quad-band GSM/GPRS module — Ultra-small footprint of 15.8 × 17.7 × 2.3 mm, one of the smallest in its class, perfect for space-constrained designs.
- Easier soldering process with LCC package — LCC castellation packaging enables reliable surface-mount assembly, supports automated high-volume production, and improves durability in rugged applications.
- Power consumption as low as 1.3mA — Exceptional low-power performance (e.g., in sleep mode with DRX=5), ideal for battery-powered devices and extending operational life in remote or wearable scenarios.
- Support for Voice, Bluetooth, QuecFOTA™, and Quectel OpenCPU functions — Includes voice/audio capabilities, integrated Bluetooth 3.0 for short-range connectivity, QuecFOTA™ for reliable over-the-air firmware updates, and OpenCPU for running custom applications directly on the module (reducing external MCU needs).
- Embedded powerful Internet service protocols, multiple Sockets & IP addresses — Built-in TCP/IP stack with support for multiple simultaneous sockets and IP connections, enabling robust and flexible data transmission for M2M/IoT applications.
M66 Quectel Development Board Specifications
| Category | Parameter | Value / Details |
|---|---|---|
| Frequency Band | Quad-band | 850 / 900 / 1800 / 1900 MHz |
| Data | GPRS Class 12 | Max. 85.6 kbps Downlink Max. 85.6 kbps Uplink |
| Coding Schemes | CS 1, 2, 3, 4 | |
| USSD | Mode | Non-transparent Mode |
| SMS | Supported Types | Point-to-point MO and MT SMS Cell Broadcast |
| Format | Text and PDU Mode | |
| Voice | Speech Codec Modes | Half Rate (HR) Full Rate (FR) Enhanced Full Rate (EFR) Adaptive Multi-Rate (AMR) |
| Echo Arithmetic | Echo Cancellation Echo Suppression Noise Reduction |
|
| Interfaces | (U)SIM Card Interface | 3.0 V / 1.8 V |
| UART | × 3 | |
| Analog Audio Channel | 2 Output Channels + 1 Input Channel | |
| Bluetooth | BT 3.0 Profiles: SPP, HFP |
|
| PCM | × 1 | |
| RTC | × 1 | |
| ADC | × 1 | |
| Antenna Pad | × 2 (GSM Antenna Pad + Bluetooth Antenna Pad) | |
| Enhanced Features | Supported | eCall, Jamming Detection, DTMF, Audio Play/Record, QuecFOTA™, QuecCell, QuecLocator, QuecFile, OpenCPU™, RIL for Android, MUX, Bluetooth |
| Electrical & Sensitivity | Output Power | Class 4 (2 W @ 850/900 MHz) Class 1 (1 W @ 1800/1900 MHz) |
| Consumption | 1.3 mA @ DRX=5 1.2 mA @ DRX=9 |
|
| Sensitivity | GSM850: -109 dBm GSM900: -109 dBm DCS1800: -109 dBm PCS1900: -109 dBm |
|
| Supply Voltage | 3.3 V ~ 4.6 V, typical 4.0 V | |
| Software Features | Bluetooth | BT 3.0 |
| Protocols | TCP / UDP / PPP / FTP / HTTP / SMTP / CMUX / SSL | |
| General Features | GPRS Multi-slot Class | Class 12 |
| GPRS Mobile Station | Class B | |
| Temperature Range | -40 °C ~ +85 °C | |
| Dimensions | 17.7 mm × 15.8 mm × 2.3 mm | |
| Package / Weight | LCC Package Approx. 1.3 g |
|
| AT Commands | GSM 07.07, 07.05 and other Enhanced AT Commands | |
| Approvals | RoHS Compliant CE / UCRF (Europe) DoC (Russia) Anatel (Brazil) ICASA (South Africa) |
M66 Quectel Development Board Applications
- Ultra-compact size: With dimensions of just 15.8 × 17.7 × 2.3 mm, the M66 is one of the smallest quad-band GSM/GPRS modules available, making it ideal for space-constrained designs.
- Low power consumption: Optimized energy usage helps extend battery life, which is especially important for battery-powered or remote devices.
- Extended temperature range: Reliable operation in harsh environments and across a wide temperature span, suitable for industrial and outdoor applications.
- LCC castellation package: Surface-mount technology that supports automated high-volume production, reduces assembly costs, and enables rugged, durable product designs.
- Excellent RF performance: Based on the latest 2G chipset, delivers strong and stable performance for SMS, GPRS data transmission, and voice/audio even in difficult signal conditions.
- Perfect for size-sensitive and cost-sensitive projects: The combination of tiny footprint, manufacturability, and competitive cost makes it highly suitable for mass production.
Ideal M2M / IoT application areas:
- Wearable devices
- Automotive and telematics systems
- Industrial PDAs and handheld terminals
- Personal tracking and asset tracking devices
- Wireless POS (point-of-sale) terminals
- Smart metering (electricity, water, gas)
- And many other embedded M2M and IoT solutions requiring compact, reliable 2G connectivity








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