Product Manual

2
1. Overview
MMJ05-1B-015 module is a "pole" series LoRa RF terminal module developed by Star. This
module integrates LoRa's core radio frequency chip LLCC68 and its peripheral circuit, adopts
serial interface to interact with user equipment for data and instruction, and can conveniently
provide users with fast LoRa wireless terminal communication and other services.
MMJ05-1B-015 module size is 20mm*8.9mm*2.7mm, which has the characteristics of small
volume, low power consumption, long transmission distance and strong anti-interference ability,
suitable for a variety of applications: low power applications of the Internet of things (IoT),
automatic meter reading, smart city, industrial automation, smart home, wearable devices, etc.
1.1 Specification
➢ Voltage: 1.8V ~ 3.6 V
➢ Frequency band: 902~928MHz
➢ Tx Power: 20±1dBm (Standard power, up to 21dBm)
➢ Rx sensitivity: -129dBm (Typical value, SF=9, BW_L=600KHz@LoRa)
➢ Effective communication distance: 3km (Urban highway environment, non-wilderness
environment @SF9, 20dBm)
➢ Power Consumption: ≤2μA (Sleep current)
1.2 Electrical parameters
DC characteristic parameters
Main
Parameters
Minimum value
Typical value
Maximum value
Unit
Remark
Voltage
1.8
3.3
3.6
V
-
Current
Standby current
-
2.7
-
mA
-
Sleep current
-
2
-
μA
-
Tx
characteristic
RF
characteristic
parameters
Main
Parameters
Testing
condition
Minimum
value
Typical value
Maximum
value
Unit
Remark
Operating
frequency
902~928 MHz
Tx
characteristic
LoRa mode, carrier output, ambient temperature of 25℃, supply voltage of 3.3V