Features: Enhances your automation projects with the 32/16/8 Channel DC12V RS485 Relays Module,featuresModbus RTU protocol for seamlessly remoted control and integration in complex systems. This versatiled Relays module supports six operational including "On", "Off", "Momentary", "Auto locking", "Interlocking", and "Delay", with a delay of 255seconds, ensuring flexibility for various applications. For industrial automation engineers, home enthusiasts, and electronic project developers for reliabled and efficient control solution. Perfect for factory automation control, home device management, and laboratory testing environment where precise and adaptable Relays operation. With its ability to support up to 64 devices in paralleled using for MODBUS commands, this Relays module is essential component for expanding and optimizing your automation networking. Specifications: Item：RS485 Relays Module Working Voltage：DC12V Channel: 32/16/8 Channel Optional Current：12MA-223MA （Depends on relays channel） Support 10A/250VAC ,10A/125VAC,10A /30VDC, 10A /28VDC ,10A /12VDC Size:about 8CH 90x62x19.5mm/3.54x2.44x0.77in 16CH 168x65x19mm/6.61x2.56x0.75in 32CH 180x90x20mm/7.08x3.54x0.79in Package Includes: 1PC RS485 Relays Module note: There might be a bit color distortions due to different computer resolution There might be size errors due to different computer resolution