The HM-TRLR-D-232-868 Module manufactured by Hope Microelectronics is a transceiver module with RF, FSK, GFSK, LoRa, and OOK capabilities and an operating frequency of 868MHz. This module allows for data transmission and reception via RS232 and UART ports. It has a high receiving sensitivity of -146 dBm, and supports a maximum data rate of 20 kbps. It has a voltage range of 2.0V - 3.6V, and is built in a 24-pin LGA package. It is suitable for applications in Smart Buildings, Home Automation, and Industrial Monitoring.