This heavy-duty 5-pin SPDT relay (Single Pole Double Throw) is engineered for reliable performance in lighting, automotive, marine, and general electrical applications. Operating at 12V DC with a robust 40-amp capacity, this waterproof relay features a durable metal mounting bracket for secure installation. Its compact design combines small size and light weight without compromising on power, making it ideal for controlling vehicle lighting systems, cooling fans, and other high-current automotive circuits. The relay delivers consistent switching performance across an impressive temperature range from -40°C to +125°C, with a proven lifecycle of 100,000 cycles. Compatible with various automotive systems, this relay serves as a direct replacement for many standard automotive relays. The unit's 75V DC maximum switching current and 1.9W coil power ensure reliable operation in demanding conditions. Perfect for both professional mechanics and DIY enthusiasts looking for a dependable relay solution. Your solution for A2S1CSQ12VDC needs