Product Info

NB-IoT Module Series
BC660K-GL Hardware Design
BC660K-GL_Hardware_Design
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2.2. Key Features
The following table describes the detailed features of BC660K-GL module.
Table 2: BC660K-GL Key Features
Feature
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
(U)SIM Interface

Support 1.8/3.0 V (U)SIM card
UART Interfaces
Main UART Port:
 Used for AT command communication and data transmission, the baud
rate is 115200 bps by default. For more details, see Chapter 3.7.1.
 Used for firmware upgrade, and in such case, the baud rate is 921600
bps by default.
Debug UART Port:
 Used for firmware debugging
 Default baud rate: 6 Mbps
Network Protocols

UDP/TCP/SNTP/LwM2M*/MQTT*/TLS*/DTLS*
SMS*

Text/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 and
3GPP Rel-14) and 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