Data Sheet
Waterproof Long Range Wireless LoRa Sensor Node
WWW.DRAGINO.COM
sales@dragino.com
Dragino Technology Co., Limited
Room 1101, City Invest Commercial Center, No.546 QingLinRoad
LongCheng Street, LongGang District ; Shenzhen 518116,China
Direct:+86 755 86610829 |Fax:+86 755 86647123
Order Info- LSN50-XX-YY
XX:
433: Best Tuned at 433Mhz
868: Best Tuned at 868Mhz
Applications:
Wireless Alarm and Security Systems
Home and Building Automation
Automated Meter Reading
Industrial Monitoring and Control
Long range Irrigation Systems,etc.
LoRa Side:
EEPROM:6KB
68 dB maximum link budget.
+14 dBm high efficiency PA.
LoRa Chip: sx1276/sx1278
Programmable bit rate up to 300 kbps.
Specifications:
MCU Side:
MCU: STM32L072CZT6
Flash:192KB
Clock Speed: 32Mhz
High sensitivity: down to -148 dBm.
+20 dBm - 100 mW constant RF output vs.
Bullet-proof front end: IIP3 = -12.5 dBm.
RAM:20KB
127 dB Dynamic Range RSSI.
Dimensions:
Size: 65 x 50 x 50mm
Net Weight: 140g
LSN50
Pin Definition
Absolute Maximum Ratings:
I/O pins: 0.5v ~ VCC+0.5V
Common DC Characteristics:
Supply Voltage: 2.1v ~ 3.6v
Operating Tempature: -40 ~ 85°C
I/O pins: Refer to STM32L072 datasheet
Power Consumption:
915: Best Tuned at 915/920 Mhz
YY:
12: With M12 waterproof cable hole
16: With M16 waterproof cable hole
20: With M20 waterproof cable hole
STOP Mode: 2.7uA @ 3.3v
LoRa Transmit Mode:
125mA @ 20dBm
44mA @ 14dBm
LoRaWAN 1.0.2 Specification
Battery:
Li/SOCI2 unchargable battery
Capacity: 4000mAh
Self Discharge: <1% / Year @ 25°C
Max continuously current: 130mA
Max boost current: 2A, 1 second
1
PA0
2
PA1
3
PA2
4
PA3
5
PB6
6
PB7
7
PB3
8
PB4
9
PA9
10
PA10
11
GND
12
25
VCC
13
JUMPER
PA12
PA11
PA14
PB12
PB15
PB14
PA13
PA8
GND
VCC
14 15 16 17 18 19 20 21 22 23
BOOT MODE
24
RESET