Enhance your electronic control projects with this high-performance 8-Channel Relay Module, designed for reliable and stable operation. Featuring patch photocoupler isolation, this relay module offers strong driving capability with a low trigger current of just 5mA, ensuring efficient and safe switching. The module supports multiple operating voltages of 5V, 12V, and 24V, making it versatile for various applications. Key Features: · Patch Photocoupler Isolation: Provides robust electrical isolation between control and load circuits, enhancing safety and signal integrity. · Low Trigger Current: Requires only 5mA trigger current for activation, reducing power consumption and enabling compatibility with a wide range of controllers. · Flexible Triggering Modes: Each relay channel can be triggered by either high level or low level signals, selectable via jumper settings for maximum adaptability. · Fault-Tolerant Design: Ensures that relays remain in their current state even if the control line is disconnected, preventing unintended switching. · Visual Indicators: Equipped with a green power indicator and eight red relay status LEDs for easy monitoring of module operation. · User-Friendly Interface: All terminals are designed for direct connection with terminal leads, simplifying installation and wiring. · Secure Mounting: Four fixing bolt holes are provided for stable and secure mounting in your projects. Specifications: · Weight: 118g (4.2oz) · Module Dimensions (L x W x H): 141.5 x 50 x 18.5mm (5.6 x 2 x 0.7 inches) · Bolt Hole Diameter: 3.1mm; Spacing: 136 x 44.5mm · Operating Voltage Options: 5V, 12V, 24V · Trigger Current: 5mA Module Interfaces: · DC+ and DC-: Connect to the positive and negative poles of the power supply respectively. · In1-In8: Control inputs for each relay channel, configurable for high or low level triggering via jumper settings. · Relay Output Terminals:  - NO1-NO8: Normally Open contacts, disconnected from COM when idle and connected when activated.  - COM1-COM8: Common terminals for each relay channel.  - NC1-NC8: Normally Closed contacts, connected to COM when idle and disconnected when activated. · High/Low Level Trigger Selection:  - S1-S8 jumpers allow selection of high or low level trigger mode for each relay channel. Package Includes: · 1 x 8-Channel Relay Module This 8-Channel Relay Module combines stable performance, flexible control options, and robust design, making it an ideal solution for automation, robotics, and electronic switching projects requiring reliable relay control.