RT5BF01 wireless transmission module, based on the 433M frequency band development, can be RS485 received data signal into wireless signal, can be within a certain distance and the other end of the wireless transmission module for wireless communication, the other end of the wireless transmission module received wireless signal, and then converted into RS485 signal output. Users can use multiple wireless transmission modules for data transmission without the need to lay too many long signal transmission lines. The modules only need to be powered on and connected to RS485 devices to achieve mutual data transmission, which is very convenient for users to operate RS485 devices at the remote end and effectively avoid the inability to transmit data due to rusty, broken or poor contact signal lines. The module only requires two parameters to be set, which can be set via dip switches, simplifying the parameter setting process and making it very user-friendly. The parameters that can be set are the baud rate and the channel, and the dip switch settings can be found in the following selection table. Radio frequency of the module = channel * 5.5MHz + 426MHz. Supply voltage: DC 8-25V (12V recommended) Working current:18-30MA Baud rate:9600/19200/38400/115200 default 9600, N, 8, 1 Wireless operating frequency: 426MHz-508.5MHz, 16 channels, channel spacing 5.5MHz, default 426MHz Transmit power:20dBm Receiving sensitivity: -121dBm Wireless transmission distance:800-1000m(unobstructed open space) Communication interface:RS485 By changing the 485 address, a maximum of 63 modules can be cascaded (if more than 16 modules are used, use an RS485 repeater) Due to different production batches, there are differences in printing/appearance, which does not affect use. Colour:As Shown Material:Plastic Package Contents: 2 * 433M DC 12V/24V DIP Switch Wireless RS485 transceiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.