LF7811 is a compact, low power, bidirectional transcevier module for 433~510MHz band, provides ultra-long range spread spectrum communication and high inteference immunity whilst minimissing current consumption. It Integrated with Semtech's SX1278 RF transceiver, high sensitivity of over -139dBm combined with the integrated +18.6dBm power amplifer yields industry leading link budget making LF7811 optimal for any application requiring range or robustness. The LoRaTM modulation, in contrast to conventional modulation techniques , permits an increase in link budget and increases immunity to in-band interference. It achieves sensitivities 8dBm batter than traditional FSK modulation and it also provides significant advantages in both blocking and slectivity.
LF7811
- Compliance to LoRaWAN
- SX1278 RF transceiver
- 433MHz/470~510MHz
- UART host Interface
- Tx power: +18.6dBm
- Rx: down to -139dBm
Description
Application
- Home and Building Automation
- Industrial Monitoring and Control
- Smart Environmental Monitoring
- Smart Agriculture
- Location Monitoring
- Wireless Alarm and Security Systems
- Long Range Irrigation Systems
- Smart Cities
- Automated Meter Reading
- Low power consumption IoT application
Ordering information
Model No. | Descripton |
LF7811-W | 433MHz ,Suitable for China &Europe |
LF7811-C | 470~510MHz ,Suitable for China |
Technical Specification
Host Interface | SPI/GPIO |
Product Description | LoRa Wireless Module |
Package | LCC Type |
Dimensions | TYP.21.2*16.7*2.7mm(W*L*H) |
Electric Specification
Frequency | 433~510MHz,Optional |
Band Width | 62.5~500KHz |
Tx Power | +18.6dBm |
Receive Sensitivity | Down to -139dBm |
Link Budget | Up to 157.6dB |
Operation Conditions
Supply Voltag | +3.3V |
Average Tx Current | ≤108mA |
Average Rx Current | ≤20mA |
Sleeping Current | ≤1uA |
Sleeping Period | More than 2S , optional |
Operating Period | More than 3S , Optional |
Operating Temp | -40~+85°C(Industrial Grade) |
Storage Temp | -40~+125°C |
Humidity | Operating:10%~90% |
WAN Protocol | ISM Band-LoRaTM |
ESD | JEDEC.JS-001,Standard ±1kV,Class 2 |