Chip Solution: GFSK Modulation Carrier Frequency: 420~450MHz (customizable) Transmission Power: 27dBm Communication Distance: 3Km~4.5Km Product Size: 62 * 43 * 14mm Communication Interface: TTL/RS232/RS485 Product Introduction: YL-500IW is a high stability, low power consumption, and cost-effective wireless module that uses GFSK modulation to increase the stability of wireless data. YL-500IW is a transparent transmission module that enables wireless data transmission without changing any of the customer's data and protocols. The YL-500IW has undergone numerous software checks to ensure stability, ensuring that the module will never crash or fail to function under any circumstances, fully complying with industrial design standards. This module has the characteristics of small size, high sensitivity, long transmission distance, high communication rate, and automatic internal communication protocol conversion and data transmission and reception control compared to general modules. Users can flexibly configure the serial rate, working channel, transmission power, communication rate and other parameters of the module according to their own needs through the upper computer software configured by our company.