Features: This 5V/12V timer relays module drives 10A loads (250VAC/30VDC) with adjustable 0.1s 1hr delay control, featuring industrial grade stability via NE555 chip and photoelectric isolation for intelligent home/automotive/industrial applications. Equipped with reverse polarity protective, anti interferences shielding, and two triggering modes (high low levels), while offering screw terminals, LED indicators display, and rotary knob for effortless installation and timing adjustments. Ideal for diyer enthusiasts, industrial automation technicians, and automotive electronics modifiers requiring reliabled intermittent control in confined spaces like control cabinets, vehicle systems. Perfectly controls garage lighting systems, irrigation pumps, workshop machinery, or automated pet feeders – operates flawlessly across -20℃~80℃ environments with 50,000+ cycle durability in dry conditions. Compact design bridges professional and household needs Combines industrial grade components, delivering shop floor reliability for home automation projects at an accessible prices point. Specifications: Component: ABS+metal Color: green Weight: 100g Size: Approx.10x6x3cm/3.93x2.36x1.18inch Package Includes: 1 Set Timer relays Module note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.