ماژول RFM95W LORA WIRELESS 915MHZ:

ماژول RFM95W LORA WIRELESS 915MHZ به شماره RFM95W با فرکانس 915 مگاهرتز جهت پیاده سازی شبکه ارتباط بی سیم LoRa می باشد.

مشخصات محصول:

فرکانس کاری:915MHz
ولتاژ کاری:3.3V
پروتکل ارتباطی:SPI
ابعاد:16x16mm

Module Features:

 RF Frequency Range: 433/868/915MHz ISM Band
Channel bandwidth: 125kHz, 250kHz or 500kHz
RF Power Output: up to +20dBm
Receiver Sensitivity: -119dBm @ 1.2kbps (FSK), -148dBm @ 18bps (LoRa, SF=12, CR=4/6)
Modulation: LoRa™, FSK, GFSK, MSK, GMSK or OOK
OTA Data Rate: up to 250kbps (FSK), up to 37.5kbps (LoRa)
Range: up to 15km (Line of Sight)
Packet engine up to 256 bytes with CRC
Forward Error Correction (FEC) with selectable Coding Rate
127dB dynamic range RSSI
Host communication: serial SPI
Temperature sensor and low-battery indicator
Power supply: +1.8V to +3.6Vdc
Operating temperature range: -20 to +70°C
Dimensions 16 x 16mm
Applications: Automated Meter Reading, Home & Building Automation, Wireless Alarm & Security Systems, Industrial Monitoring & Control, Long-range communication for the Internet of Things (IoT)

Item: MP3 Player Audio Voice Module.
The DFPlayer perfectly integrates hard decoding module, which supports common audio formats such as MP3, WAV and WMA. Besides, it also supports TF card with FAT16, FAT32 file system.
Supported Sampling Rates (kHz): 8/11.025/12/16/22.05/24/32/44.1/48; 24 -bit DAC output, support for dynamic range 90dB , SNR support 85dB.
You can play the designated music without any other tedious underlying operations by a simple serial port.
Control modes: I/O control mode, serial mode, AD button control mode.