16-Channel DC 5V Relay Module Optocoupler Isolation Expansion Board for PLC 10A 250V AC/30V DC 180×90mm

16-channel relay module with optocoupler isolation for microcontroller systemsOperates on 5V DC with low-level trigger signal compatibility (0-2V). Features industry-grade optocouplers for enhanced anti-interference performance and stable run with minimal 3mA trigger currentSpecification:Item Type: Relay ModuleSupply Voltage: DC 5VPower Supply Current: More Than 200mALoad Per Relay: 250V 10A (AC) or 30V 10A (DC)Size: 180 * 90 * 20mm(7.09 * 3.54 * 0.79in)Color: As picture shownPackage List:1 * Relay ModuleProduct Instructions:1. The power supply should meet the scope of use, DC 5V2. The power supply is required according to the wiring diagram and cannot be reversed3. The product uses LM2596S step-down chip with slight heat, which is normal. The relay has normal heating for a long time, which is normal4. The load power should have a certain margin for the relay load. Avoid high power (about 2000W) and work for a long time, which will have a certain impact on product life

• ‌Industrial-Grade Protection‌: Premium optocouplers isolate control circuits (3mA trigger current) from high-voltage loads (10A 250V AC/30V DC)
• ‌Flexible Channel Control‌: Independently operate 1-16 relays via low-level (0-2V) signals; each COM/NO/NC terminal supports mixed AC/DC loads
• ‌User-Friendly Design‌: Terminal blocks + LED indicators per relay + 4 mounting holes (180×90×20mm) for quick integration
• ‌Built-In Power Management‌: LM2596S step-down chip enables 5V use (≥200mA) without external PSU; slight heating is normal
• ‌Multi-Application Ready‌: Ideal for smart home automation, PLC expansions, or industrial equipment control (maximum 2000W with margin)