Waterproof - This 5 pin relay 12v has seal ring inside the harness socket to improve its waterproof performance, makes it much safer under moist environment use.
Wide Application - The waterproof relay 12v acts as a bridge between switches and devices, which helps to achieve controlling high rating devices by small rating switches, suitable for auto, car, truck, marine boat, etc.
Built-in Diode
With built-in diode to consume the induced voltage, and therefore protect the electric components from being damaged by the induced voltage.
Blocks the Current when Switch ON
Built-in diode helps to prevent the other side of circuit from leading short-circuit when switch ON to actuate the relay coil.
Helps to Consume the Induced Voltage when Switch OFF
Diode helps to keep at least one circuit closing when switch OFF, which aims to prevent the other electric components from being damaged by the induced voltage.