NB-IoT
Module Series
BC660K-GL Hardware Design
BC660K-GL_Hardware_Design 11 / 57
2.2. Key Features
The following table describes the detailed features of BC660K-GL module.
Table 2: Key Features of BC660K-GL
Item
Details
Power Supply
⚫
Supply voltage: 2.2
–4.3 V
⚫
Typical supply voltage: 3.3 V
Power Saving
Typical power consumption: 800 nA
Frequency Bands
LTE Cat NB2:
B1/B2/B3/B4/B5/B8/B12/B13/B14/B17/B18/B19/B20/B25/B28/B66/B70/B85
Transmitting Power
23 dBm ±2 dB
USIM Interface
Support 1.8/3.0 V USIM card
UART Interfaces
Main UART Port:
⚫
Used for AT command communication and data transmission, where
the
baud rate is 115200 bps by default. For more details, see
Chapter 3.7.1
.
⚫
Used for firmware upgrade, where the baud rate is 921600 bps by
default.
Debug UART Port:
⚫
Used for debugging
⚫
Default baud rate: 6 Mbps
Network Protocols
UDP/TCP/SNTP/LwM2M*/MQTT*/TLS*/DTLS*/SSL*
SMS*
⚫
Text Mode
⚫
PDU Mode
Data Transmission
Features
⚫
Single-tone (max): 25.5 kbps (DL)/16.7 kbps (UL)
⚫
Multi-tone (max): 127 kbps (DL)/158.5 kbps (UL)
AT Commands
⚫
3GPP TS 27.005/3GPP TS 27.007 AT commands (3GPP Rel-13)
⚫
Quectel enhanced AT commands
Firmware Update
⚫
Upgrade firmware via main
UART
port
⚫
Upgrade firmware via DFOTA
Real Time Clock
Supported
Physical Characteristics
⚫
Size: (17.7 ±0.15) mm × (15.8 ±0.15) mm × (2.0 ±0.2) mm
⚫
Weight: 1.0 ±0.2 g
Temperature Range
⚫
Operating temperature range: -35 to +75 °C
1)
⚫
Extended temperature range: -40 to +85 °C
2)
⚫
Storage temperature range: -40 to +90 °C
