This part is a kind of semiconductor called RFM95W.

Function of this product has Low Power Long Range Transceiver Module.

Manufacturers : HOPERF

Image and pinout :

Some of the text within the PDF file :

RFM95/96/97/98（W） RFM95/96/97/98(W) - Low Power Long Range Transceiver Module V1.0 GENERAL DESCRIPTION The RFM95/96/97/98(W) transceivers feature the LoRaTM long range modem that provides ultra-long range spread spectrum communication and high interference immunity whilst minimising current consumption. Using Hope RF’s patented LoRaTM modulation technique RFM95/96/97/98(W) can achieve a sensitivity of over 148dBm using a low cost crystal and bill of materials. The high sensitivity combined with the integrated +20 dBm power amplifier yields industry leading link budget making it optimal for any application requiring range or robustness. LoRaTM also provides significant advantages in both blocking and selectivity over conventional modulation techniques, solving the tradition [ ... ]

RFM95W PDF Datasheet Download