The optocoupler isolation design provides good anti-interference performance. Professional craftsmanship ensures strong driving capability and stable performance. Simple and convenient installation saves time and effort. Multiple working voltage options allow you to select the most suitable one based on your requirements. Made of plastic material, it is durable for long-term use. Available in three specifications: 5V, 12V, and 24V. Suitable for circuit testing, experiments, workshops, control systems, DIY projects, and more. Item Name: Relay Module Material: Plastic Current: More than 100mA Power Supply Voltage: 5VDC Load: 250V 10A AC or 30V 10A DC Features: Stable performance, good anti-interference, high-level signal release Wiring Instructions: VCC: System power positive GND: System power negative In1–In2: Relay control port (Do not reverse) Size Details: 5V: 1.7cm x 4.33cm / 0.67" x 1.7" (Approx.) 12V: 5.6cm x 7.6cm / 2.2" x 2.99" (Approx.) 24V: 5.6cm x 13.8cm / 2.2" x 5.43" (Approx.) Hole Diameter: 0.31cm / 0.12" (Approx.) Notes: Due to differences in lighting and screen settings, the item color may vary slightly from the images. Please allow slight dimensional differences due to manual measurement. The status indicator is on when the inverter is closed and off when released. Package Includes: 1 x Relay Module