Difference B/W M66 R2.0 and M66 R1.0
➤ M66 R2.0 does NOT support BT 3.0 while M66 R1.0 supports it.
➤ M66 R2.0 does NOT support UART GNSS while M66 R1.0 supports it.
➤ M66 R2.0 does NOT support OpenCPU while M66 R1.0 supports it.
➤ M66 R2.0 does NOT support SD card and UFS functions while M66 R1.0 supports them.
M66 R1.0 Module Features
Single supply voltage: 3.3V ~ 4.6V
Typical power consumption in SLEEP mode: 1.3 mA@DRX=5, 1.2 mA@DRX=9
Quad-band: GSM850, EGSM900, DCS1800, PCS1900
Class 4 (2W) at GSM850 and EGSM900
GPRS multi-slot class 12 (default)
GPRS data downlink transfer: max. 85.6kbps
Operation temperature range: -35°C ~ +75°C
Support Bluetooth specification 3.0
Text and PDU mode
Support SIM card: 1.8V, 3V
Speech codec modes:
Enhanced Full Rate (ETS 06.50/06.60/06.80)
Used for AT command
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
Size: 15.8±0.15 ×17.7±0.15 ×2.3±0.2mm
Firmware upgrade via UART Port
Connected to antenna pad with 50 Ohm impedance control