The HM-TRLR-D-485-433 is a transceiver module manufactured by Hope Microelectronics with FSK, GFSK, LoRa, OOK (On-Off Keying) modulation techniques. It is designed to operate on 433.92MHz frequency. The module also provides RS485 and UART interface for data transmission and reception. This module has a small size, low power consumption, and high operating sensitivity for better signal transmission. Integration of these features makes this module suitable for applications in smart home, security systems, wireless data transmission, etc.