These Lemfar 12V DC 4-Pin relays are a reliable choice for automotive applications. With a high switching capability of 40/30 AMP and an operating voltage range of 12V DC (max 14V DC), they can handle demanding electrical loads. The SPDT (Single Pole Double Throw) design allows for versatile switching configurations. Constructed with a waterproof relay socket, these relays are built to withstand harsh environments. Compatible with Toyota Prius Plug-in Hybrid Electric Vehicles and suitable replacements for the JD-2912 type, they offer seamless integration into existing systems. With a nominal coil voltage of 12V DC, coil power of 1.8W, and coil resistance of 80 Ohms, these relays ensure efficient operation. The contact current rating of NO - 40A/14V DC and NC: 30A/14V DC ensures reliable performance. Whether for automotive repairs, upgrades, or custom projects, these Lemfar relays provide a dependable solution.