Mini SX1278 LoRa 5km Wireless Transceiver Module + Free Antenna

โมดูลสื่อสารไร้สายระยะไกล LoRa ขนาดเล็ก ย่านความถี่ความถี่ 433MHz ระยะทางสูงสุด 5 กิโลเมตร

Description:

This module is a type of low cost RF front-end transceiver module based on SX1278 from Semtech Corporation. It keeps the advantages of RFIC SX1278 but simplifies the circuit design. The high sensitivity (-136dBm) in LoRa modulation and 20dBm high power output make the module suitable for low range and low data rate applications.

The module consists of RFIC SX1278, thin SMD crystal and antenna matching circuit. The antenna port is well matched to standard 50 Ohm impedance. Users don't need to spend time in RF circuit design and choose suitable antennas for different applications. The module operates at 1.8~3.6V with extra low standby current which makes it suitable for battery powered-up applications. Because it is purely hardware module and it adopts ±10ppm crystal which the resolution of it places a important role in calculating spreading factor, bandwidth, etc.
Features:

• FSK/GFKS technology, LoRa (remote) spread spectrum technology
• Half duplex communication
• Strong anti-interference (channel rejection ratio: 56db)
• High receiving sensitivity - 139dbm. (32M passive 10ppm crystal)
• ISM multi-band, no need to apply for free frequency. 
• Multi-frequency optional, multiple transmission rates. Can be applied in FDMA and FM technology.
• Intelligent reset, low voltage monitoring, timed wake up, low power mode, sleep mode
• Low power receiving current: 10-12mA
• 256 -bit FIFO TX/RX
• RSSI channel detection function
• Transmission mode: FIFO / direct mode (recommended FIFO packet mode)
• Configuration: AFC / air wake up function / low power / carrier sense / FEC error correction / AEC encryption
• Long distance transmissionThe space is up to 5km
• Module size: 22.8 x 22.7 x 4.2mm

Applications:

• Remote control and remote data acquisition system
• Wireless meter reading (water meter, electricity meter, gas meter)
• Original 485/232 interface system for wireless ordering machine, oil field, mining area, construction site, factory, etc.
• Industrial data acquisition, transmission, intelligent control system
• Wireless alarm system
• Intelligent furniture system
• Infant monitoring system / hospital paging system
• Wireless small data transmission system

Interface Definition:

 Parameter performance: