LoRa module 433MHz Ra-02 SX1278 โมดูลส่งข้อมูลไร้สายระยะไกล (ประมาณ 10KM ตามใน Datasheet) ความถี่ 433Mhz ใช้ไฟเลี้ยง 1.8-3.7V สามารถตั้งการทำงานเป็นตัวส่งข้อมูลหรือจะทำงานเป็น Gateway คอยรับข้อมูลเพื่อส่งเข้า Internet โดยใช้ ESP8266 ESP32 Raspberry Pi ก็ได้ สื่อสารด้วย SPI 

Ra-02 is a wireless transmission module based on SEMTECH's SX1278 wireless transceiver. It adopts advanced LoRa spread spectrum technology, with a communication distance of 10,000 meters. It has strong ability of anti-jamming and has the function of air wake-up Consumption. The SX1278 RF module is mainly used for long-range spread spectrum communication, and it can resist Minimize current consumption. The SX1278 has a high sensitivity of -148 dBm with a power output of +20 dBm, and a long transmission distance and high reliability. At the same time, compared with the traditional modulation technology, LoRa ™ modulation technology has obvious advantages in anti-blocking and selection, which solves the problem that the traditional design scheme can not consider the distance, interference and power consumption at the same time.

It can be covering thousands of people in the district environment, particularly suitable for meter reading, smart home, burglar alarm equipment.

Features :

• LoRa ™ Spread Spectrum modulation technology
• Constant RF power output at + 20dBm-100mW voltage change
• Half-duplex SPI communication
• Supports FSK, GFSK, MSK, GMSK, LoRa ™ and OOK modulation modes
• Automatic RF signal detection, CAD mode and very high speed AFC
• Packet engine with CRC up to 256 bytes
• Small footprint dual-row stamp-hole patch package
• Shielded housing

Specifications :

• Communication distance: 15KM
• Sensitivity: down to -148dBm
• Programmable bit rates: up to 300kbps
• RSSI dynamic range: 127dB
• Wireless frequency: 433MHz
• Working voltage: 1.8-3.7v
• Working temperature: -40-+80 ℃

เอกสารเพิ่มเติม :

• Datasheet

Applications:

• Remote control and remote data acquisition system.
• Wireless ordering machine, petroleum, mining, construction sites, factories and other original 485/232 interface system.
• Industrial data acquisition, transmission, intelligent control system.
• Baby monitoring system / hospital tracking system
• Wireless small data transmission system
• Wireless alarm system
• Intelligent furniture system
• Wireless meter reading (water, electricity, gas)