The Songle SLD-12VDC-1C is a heavy-duty power relay suitable for automotive applications. This pack includes two 5-pin relays with a maximum amperage of 40A and a current rating of 31-40A. The mounting style is modular, and the relay has three poles and two phases. The coil voltage is 11-20V, and the current type is DC. The brand is Songle, and the model number is SLD-12VDC-1C.