Feature: 1. PROTOCOL AND INSTRUCTION: LED digital display board supports for RTU protocol, 03 read command, 06 or 16 write command 2. MULTIPLE DEVICE ADDRESSES: 1 to 247. The default of LED Module is 1. By modifying the 485 address, a maximum of 247 modules can be cascaded(please use RS485 repeaters if over 32) 3. COMPREHENSIVE FUNCTION: LED display module can display numbers, ASCII characters, letters, floating point numbers, negative numbers, etc., brightness can be adjusted 4. PRACTICAL LABEL FUNCTION: The RS485 display module supports the electronic label function. After being powered on, you can set the initial display content 5. EXCELLENT PERFORMANCE: RS485 display module is made with fine workmanship, possess compact appearance and stable performance, can make sure durability and stability Specification: Item Type: LED Display Module Operating Voltage: DC 5~28V Working Current: 4.3~42mA(related to brightness of digital tube) For RTU protocol, 03 read instruction, 06 or 16 write instruction Digital Tube Color: Red Digital Tube Position: 6 Digits 0.36inches Communication Interface: RS485 Supported Baud Rate: 1200 2400 4800 9600(default) 19200 38400 57600 115200 Parity Check: None, even check, odd check. Package List: 1 x LED Display Module