Specification Brand : TANIQIACA BulletPoint : TM1638 Digital LED Display 8-Bit Digital Tube Board 3-Wire 16 Keys 8 Bits Keyboard Scan And KEY LED Module For BulletPoint1 : Easy Installation: Lightweight and compact design allows for quick and effortless installation, saving you time and effort. BulletPoint2 : Adjustable Brightness: Customize the display brightness to suit your environment, ensuring optimal visibility in any setting. BulletPoint3 : Clear Display: The 4-digit, 0.56-inch LED display offers Cutting and legible numbers, ASCII characters, letters, and floating-point numbers. BulletPoint4 : Multiple Module Support: Cascade up to 247 modules by modifying the 485 address, expanding your display capabilities. BulletPoint5 : RTU Protocol Support: Compatible with RTU protocol, supporting 03 read instruction and 06 or 16 write instruction for versatile applications. CompatibleDevices : Arduino ConnectivityTechnology : Wi-Fi IncludedComponents : No ItemName : LED Display Module, 4 Digit 0.56in, RS485 Interface, DC 5 28V, Adjustable Brightness, Supports RTU Protocol, Clear Characters Display for PLC Applications ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 12 centimeters ItemPackageDimensions_Width : 6 centimeters ItemTypeKeyword : led-segment-displays Manufacturer : TANIQIACA MeasurementAccuracy : 0.1mm MemoryStorageCapacity : 4 bytes ModelName : TANIQIACAgw5idevocb ModelNumber : TANIQIACAgw5idevocb NumberOfItems : 1 OperatingSystem : FreeRTOS PartNumber : TANIQIACAgw5idevocb ProcessorCount : 2 ProductDescription : Item Type: LED Display Module Working Voltage: DC 5-28V Working Current: 4.3~42mA, related to the brightness of LED tube. Supporting Protocol: For RTU protocol, for 03 read instruction and for 06 or 16 write instruction. LED Tube Color: Red LED Tube Position: 4 digit 0.56in. Communication Interface: RS485 Supported Baud Rate: 1200, 2400, 4800, 9600 default, 19200, 38400, 57600, 115200. Parity Check: No Check, even check, or odd check.