The 12V 30A 1-Channel Relay Module is a high-power switching module designed for controlling large electrical loads using a 12V DC control signal. It features optocoupler isolation, ensuring electrical safety and protecting sensitive control circuits from high-voltage spikes and noise. This module is suitable for industrial automation, home automation, motor control, and high-power switching applications.

Key Features:

•  High Power Switching: Supports up to 30A at 250V AC, making it suitable for heavy-duty applications.
•  Optocoupler Isolation: Ensures electrical separation between the control circuit and the relay, reducing interference and protecting the microcontroller.
•  Wide Compatibility: Works with 12V DC control systems, including industrial controllers, sensors, and automation devices.
•  LED Indicators: Built-in LED indicators provide visual feedback for power and relay operation.
•  Durable and Reliable: Features a high-quality relay with long lifespan and strong mechanical contacts.
•  Protection Circuitry: Includes a flyback diode to protect against voltage spikes from the relay coil.
• The onboard jumper can set the module's high-level or low-level trigger input

Module interface specifications:

• DC+ : DC power supply positive pole
• DC- :DC power supply negative pole
• IN : signal triggering pin
• JD+ : relay control voltage positive
• JD- : relay control voltage negative
• DC+ and JD+ shorted by jumper cap, DC- and JD- shorted with jumper cap, it is the same voltage between trigger terminal and relay control terminal
• High and low level trigger mode selection.Jumper and L pin connection, IN pin is low level triggerJumper and H pin connection, IN pin is high level trigger
• Normally closed pin (NC) : relay normally closed pin
• Common pin (COM) : relay common pin
• Normally opened pin (NO) : relay normally opened pin