User's Manual

Add: Building 1, Lierda IoT Park, No.1326, wenyixi Road, Hangzhou, Zhejiang China
Tel: [phone] Fax:[phone]
1 General Description
The LSD4RF-2F917N10 module is a high-performance RF transceiver with a highly
integrated SX127X. Using Semtech’s patented LoRa
TM
modulation technique can greatly
increase the communication distance, which is widely applied to various occasions of short
distance IoT wireless communication field. It has small size, low power consumption, long
transmission distance, strong immunity from interference and other characteristics. The user
can be free to choose different antenna , consequently, is easy to second development and its
popularization.
KEY PRODUCT FEATURES
● Supply voltage: DC 2.4
～
3.6 V
● Operating Frequency:900~925MHz
● RF output power: 19±1 dBm(max)
● High sensitivity
：
-136±1dBm (@250bps)
● Ultra effective communication distances:5Km@250bps
（
Urban road environment, not
the desert environment
）
● Using spread spectrum modem, which is capable of achieving significantly longer
range than existing systems based on FSK or OOK modulation. It provides significant
advantages ,especially in the terrible noise environment (eg. nearby the strong interference
sources and in the natural shielding environment)
● High confidentiality, using LoRa
TM
modulation , traditional wireless devices can not
capture and parse.
● High concealment,it still can normal communication when average power under
Digital Noise Floor, wireless monitoring equipment unable to listen to.
● Support LoRa
TM
, FSK, GFSK, MSK, GMSK and OOK modulation
● Low power consumption
：
current in receive mode ≤13mA
；
current in sleep mode
≤2uA
；
Provide CAD functions which separate the calculation and reception, further optimize
the power consumption of waking up the window. (the calculating current is about half of
receving current).