Enhance your electronic control projects with this versatile 4-Channel Relay Module, designed for reliable performance and flexible operation. Featuring advanced patch photocoupler isolation, this relay module delivers strong driving capability and stable performance while maintaining a low trigger current of just 5mA. Suitable for various voltage levels including 5V, 12V, and 24V, it offers adaptable control options to meet diverse application needs. Key Features: · Patch Photocoupler Isolation: Ensures excellent electrical isolation and strong driving ability, improving signal integrity and module longevity. · Flexible Triggering Modes: Each of the four relay channels can be individually configured to trigger on either high-level or low-level inputs via convenient jumper settings, allowing versatile control schemes. · Fault-Tolerant Design: Specially engineered so that even if the control line breaks, the relay remains stable without unintended operation, enhancing system safety and reliability. · Indicator Lights: Includes a green power indicator and four red relay state indicators for clear visual feedback on module status and relay activity. · User-Friendly Interface: All 12 relay output terminals and control inputs are accessible via terminal leads, simplifying wiring and integration with your projects. · Secure Mounting: Equipped with four fixing bolt holes, allowing stable installation in various environments. Specifications: · Module Size: 73 x 50 x 18.5 mm (2.9 x 2 x 0.7 inches) · Weight: 60g (2.1 oz) · Bolt Hole Diameter: 3.1 mm; Spacing: 67 x 44.5 mm · Operating Voltage: Selectable 5V, 12V, or 24V · Trigger Current: 5mA · Control Inputs: IN1 to IN4, configurable for high-level or low-level trigger · Relay Outputs: NO1-NO4 (Normally Open), COM1-COM4 (Common), NC1-NC4 (Normally Closed) Package Includes: · 1 x 4-Channel Relay Module This 4-Channel Relay Module is ideal for various electronic applications requiring reliable switching control, including automation systems, home security setups, industrial controls, and DIY electronics projects. Its robust design and multiple triggering options make it a flexible and dependable choice for both professionals and hobbyists.