Features: Brand new and high quality MODBUS RTU Command support function code: Write 05/06/15/16, Read 01/03 By modifying the 485 address, up to 247 modules can be cascaded for use (please use R485 repeater for more than 16 modules) 8 Transistors output (ULN2803 output), the driving voltage is equal to the supply voltage. The driving current of single channel is 200MA, and the driving current of all channels is 800MA. 8 channels can be used as ordinary switches output, support 05/15 function code to write data, or use 06/16 function code to operate the 0X0080 register. 8 channels can also be used as PWM output. Among them, 1-6 channels are Low-Speed PWM channels (output parameters are expressed by Period/Turn-On-Time), Turn-On-Time range: 0-6553.4 seconds (not greater than Cycle time).7-8 channels are High-Speed PWM channels (output parameters are expressed by Frequency/Duty-Cycle), output Frequency range: 1-20000Hz. Specifications: Material:ABS Type:Without Needle/With Needle Supply voltage:DC 6.5-25V. Working current: 10-12MA (without any load) BaudRate: 1200 2400 4800 9600 (default) 19200 38400 Parity: None, Even Parity, Odd Parity Length:Approx.35mm/1.38inches Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x 8ch RS485 Modbus Modules