Feature: 1. WIRELESS TRANSMISSION: Users can use multiple wireless transmission modules for data transmission without laying too many long signal transmission lines 2. EASY TO USE: The module only needs to be powered on and connected to the RS485 equipment to realize data transmission between each other, which is very convenient 3. STABLE CONNECTION: You can operate the RS485 device at a remote end to prevent data transmission failure due to signal rust, broken connections, or poor contact 4. EASY TO OPERATE: The module only needs to set two parameters, which can be set through the dip switch, simplifying the parameter setting process, very user friendly 5. WORKING PRINCIPLE: The data signal received by RS485 can be converted into wireless signal, wireless communication in a certain distance and the other end of the wireless transmission module, the other end of the wireless transmission module to receive wireless signal, and then converted into RS485 signal output Specification: Item Type: Wireless Transceiver Module Power Supply Voltage: DC 8-25V (12V is recommended) Working Current: 18-30MA Baud Rate: 9600, 19200, 38400, 115200. The default value is 9600, N, 8, and 1 Wireless Operating Frequency: 426MHz~508.5MHz, 16 channels, 5.5MHz channel interval, default 426MHz Transmitting Power: 20dBm Receiving Sensitivity: -121 DBM Wireless Transmission Distance: Approx. 800 ~ 1000meter / 2624.7 ~ 3280.8ft (open space without shelter) Communication Port: RS485 Up to 63 modules can be cascaded by changing the 485 address(more than 16 modules, using an RS485 repeater). Package List: 1 x Wireless Transceiver1 x Accessory