Item Type: Digital Tube Display Product Model: LED-054S Display Digits: 4 digits Digital Tube Size: 0.56in Shell Size: Width: Approx. 60mm / 2.4in Height: Approx. 29mm / 1.1in Depth: Approx. 22mm / 0.9in Hole Size: Width: Approx. 58mm / 2.3in Height: Approx. 27mm / 1.1in Power Supply Voltage: DC 5-36V Interface Terminal Number: XH2.54-4P Pin Definition: + refers to the power positive pole, - refers to the power negative pole A/T: RS485 Bus A/TTL TXD B/R: RS485 B/TTL RXD Serial Port Parameters: Baud Rate: 1200bps, 2400bps, 4800bps, 9600bps (factory default), 19200bps, 38400bps, 57600bps.115200bps Start Digit: 1 digit Stop Digit: 1 digit (factory default), 2 digit, 1.5 digit Data Digit: 8 Parity: No parity (factory default), odd parity, even parity Communication Protocol: Supports automatic identification of ASCII text and RTU dual protocol, no user setting is required Product Function: 1. Communication Method: RS485, supports RTU protocol and simple ASCII protocol, and the protocol is automatically recognized. 2. It can display various ASCII characters such as integer, minus sign, decimal point, ABCDEFPL, etc., which is more comprehensive. 3. Support electronic label function, the initial display content can be set after power-on. Widely used in storage location number labels. For example, display A001, B002, C003, etc. 4. Support stroke brightness adjustment, with 7 levels of brightness. 5. Support to modify the baud rate (1200bps-115200bps), covering several commonly used baud rates. 6. Support to modify the stop bit and check bit. 7. You can choose the initial display content after power on, display 0, display 485 address, display any content specified by the user, etc. 8. A 485 bus can be connected to 32 digital tubes (without relay), and 254 can be connected after adding a relay. 9. Provide supporting PC software to facilitate testing and modification of parameters.