30A 1-Channel Relay Module: Load Voltage: DC 30V / AC 250V 30A ; Module Power Supply : DC 12V（Module Supply Voltage Must Be DC, and the Voltage to be Consistent with the Relay Voltage.); Trigger Current : 5mA High Quality: 30A 1-Channel Relay Module With Optocoupler Isolation, Anti-Interference Ability and with Relay On / Off LED Indicator. Ensuring Stable and Reliable Performance for Various Industrial Control Scenarios Such as PLC Automation Equipment Control and Industrial System Control Convenient to Operation: 30A 1-Channel Relay Module Designed for User-friendly Operation, with Jumper Settings for High or Low-Level Triggering, Ensuring Simplicity in Setup. All Interfaces Can be Wired through Terminal Blocks Directly, Facilitating Quick Assembly and Debugging Applications: 30A 1-Channel Relay Module Suitable for PLC Automation Equipment Control, Industrial System Control,IOT Control,Electronic Enthusiasts to Develop Experiments, Meeting the Control Needs of Different Fields. An Ideal Choice for Both Professional Users and Electronic Enthusiasts 30A 1-Channel Relay Module High Low Level Trigger with Optocoupler