20 dBm Transmit Power, -121 dBm Receive Sensitivity UART Transmitter and Receiver Modbus RTU Module DC 12V / 24V DIN Rail Mount RS485 Wireless Transceiver with DIP Switch Product Name: DC 12V / 24V DIN Rail Mount DIP Switch RS485 Wireless Transceiver – 20 dBm Transmit Power, -121 dBm Receive Sensitivity, UART Transmitter and Receiver Modbus RTU Module Package Includes: 1 or 2 pcs of 433 MHz DC 12V / 24V DIP Switch Wireless RS485 Transceiver Power Supply: DC 8–25 V (12 V recommended) Operating Current: 18–30 mA Baud Rate Options: 9600 / 19200 / 38400 / 115200 bps (default: 9600, N, 8, 1) Wireless Operating Frequency: 426–508.5 MHz, 16 channels, channel spacing 5.5 MHz (default channel: 426 MHz) Transmit Power: 20 dBm Receive Sensitivity: -121 dBm Wireless Transmission Distance: Up to 1000 m in open, unobstructed environments Communication Interface: RS485 Maximum Cascaded Modules: 63 (use RS485 repeater if more than 16 modules are deployed) Dimensions: 107 × 54 × 32 mm Weight: 72 g Product Overview: RT5BF01 wireless transmission module operates in the 433 MHz ISM band. It converts RS485 data signals into wireless signals for bidirectional communication between compatible modules within range. The receiving module converts the wireless signal back to RS485 output. This eliminates the need for long physical cabling, reducing issues related to cable corrosion, breakage, or poor contact. Modules require only power and RS485 connection to begin operation—ideal for remote RS485 device control. Configuration is simplified using DIP switches to set baud rate and wireless channel. Radio frequency = (channel number × 5.5 MHz) + 426 MHz. Usage Instructions: - For 2 modules: Configure as peer-to-peer; each transmits and receives data from the other. - For 3 or more modules: Designate one as master and the rest as slaves. The master transmits to all slaves; any slave may transmit, and the master plus other slaves will receive. Only one device may transmit at a time. Applications: PTZ Cameras, Modbus Temperature Sensors, LED Controllers, RS485 Relays, Remote Monitoring and Control Systems, Wireless Meters, Smart Home and Home Automation Systems, Access Control Systems, Identification Systems, Data Acquisition Systems, IT and Smart Appliances, Baby Monitors, Thermometers