Features 1. Not Easy to False Welding: Our relay module is well made, with reliable soldering and a steady working process. 2. Continuous Closure: This 8-channel relay supports continuous operation up to 100,000 cycles, offering strong driving capability and stable performance. 3. Equipped with Chip: This 8-channel relay features a mature and stable 8-bit MCU and RS485 level communication chip. 4. Optocoupler Input Signal Detection: The 8-channel relay supports one-channel optocoupler input signal detection and one-channel relay output. 5. Use Scenario: Our relay module can be used for digital signal detection or power control applications. Specification Item Type: 8 Channel Relay Module Material: ABS Onboard mature and stable 8-bit MCU and MAX485 level conversion chip Communication Protocol: Supports standard RTU protocol Communication Interface: Supports RS485 or TTL UART interface Communication Baud Rate: 4800, 9600, 19200 bps; default 9600 bps; supports power-down save Optocoupler Input Signal Range: DC 3.330V (this input cannot be used for relay control) Output Signal: Relay signal; supports manual control, light off, and flashing modes Delay Base: 0.1S; maximum flash off time can be set to 0xFFFF 0.1S (6553.5 seconds) Device Address: Range 1255; default 255; supports power-down save Onboard relay switch indicator Package List 1 x 8 Channel Relay Module