Features: This 1 channel relays module features high/low levels triggering compatibility, supports 3.3V/5V/12V/24V operate voltages, and delivers stable performances with AC10A/250V & DC30V/10A load capacity through optocoupler isolation. Equipped with jumper selectable triggering mode, visible statuses LEDs (greens power/red relays), and fails safe design preventing accidental activation during wire disconnection, it ensures reliability circuit control with 5mA triggering current. Ideal for electronics engineers, developers, and enthusiasts working on automation projects requiring precise electrical switching for Raspberry systems. Perfect for smart home installations, industrial equipment control, and robotics applications where secure isolation between control circuits and highly power devices is critical. The screw terminal interfaces simplify wiring connection while the universally voltages compatibility and errorproof design make this relays module adaptable for various power supply environment and control scenario. Specifications: Component: PCB Size: Approx.50x25mm/1.97x0.98inch Option Type:3.3V,5V,12V,24V; Supports high and low levels triggering, suitable for a variety of control signals. Features: 1 relays output, supports a most current load of 10A, and the working voltages ranges is 5V-12V. It has optocouple isolation design to improve antiinterference ability. Package Includes: 1pc relays Module note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.