This high-capacity waterproof automotive relay is engineered to handle demanding electrical loads up to 100A, making it an essential component for heavy-duty vehicle control systems. Designed with SPDT (Single Pole Double Throw) configuration, this relay offers versatile contact arrangements including 1 form A, 1 form B, 1 form C, and 2 form A options to suit various automotive control applications. The relay features dual voltage compatibility with both 12VDC and 24VDC coil voltages, ensuring it works seamlessly across different vehicle electrical systems. Built to withstand extreme conditions, it operates reliably in ambient temperatures ranging from -40°F to 257°F (-40°C to 125°C), making it suitable for harsh automotive environments. The waterproof construction protects internal components from moisture, dust, and contaminants, ensuring consistent performance in all weather conditions. With its compact dimensions of approximately 1.10" x 1.10" x 0.98", this relay features a convenient tri-clamp connection and socket mount design for straightforward installation and secure mounting in your vehicle's electrical system. The transparent housing allows for visual inspection of the internal mechanism, while the integrated LED indicator provides operational status at a glance. Perfect for controlling high-current circuits in cars, trucks, boats, and other automotive applications.