Enhance your electronic control projects with this high-performance 4-way Relay Module, featuring advanced patch photocoupler isolation for strong driving capability and stable operation. Designed for versatility, this relay module supports operating voltages of 5V, 12V, and 24V, allowing you to select the most suitable voltage for your application. Each relay channel can be triggered by either a high-level or low-level signal, configurable via a convenient jumper setting to match your control logic requirements. Key Features: · **Patch Photocoupler Isolation:** Ensures reliable signal isolation with a low trigger current of just 5mA, delivering robust and stable performance. · **Multi-Voltage Operation:** Compatible with 5V, 12V, or 24V operating voltage options for flexible use in diverse electronic systems. · **Configurable Trigger Levels:** Easily set each relay channel to be activated by a high or low-level input through jumper selection, enhancing compatibility with various control circuits. · **Fault-Tolerant Design:** Prevents relay activation even if the control line breaks, adding an extra layer of safety and system reliability. · **Status Indicators:** Equipped with a green power indicator LED and four red relay status LEDs for clear, real-time operational feedback. · **User-Friendly Interface:** All connections are accessible via terminal leads, allowing for straightforward wiring and installation without the need for complex soldering. · **Secure Mounting:** Designed with four fixing bolt holes to ensure stable and secure installation in your projects. Specifications: · Weight: 18g (0.6oz) · Dimensions: 50 x 26 x 18.5 mm (2 x 1 x 0.7 inches) · Bolt Hole Diameter: 3.1 mm · Bolt Hole Spacing: 44.5 x 20.5 mm Connection Details: · **DC- Terminal:** Connect to the negative power supply pole. · **IN Terminal:** Control input accepts high or low-level signals to trigger the relay. · **Relay Output Terminals:**  - NO (Normally Open): Relay changeover terminal connected when relay is activated.  - COM (Common): Common terminal for relay switching.  - NC (Normally Closed): Relay terminal connected when relay is inactive. Trigger Level Selection: · Jumper set to LOW: Relay is triggered by a low-level signal. · Jumper set to HIGH: Relay is triggered by a high-level signal. Package Includes: · 1 x 4-Way Relay Module This relay module combines reliable isolation technology with flexible voltage and trigger level options, making it an ideal component for automation, robotics, home electronics, and other control system projects requiring precise relay control and status monitoring.