5V PCB Mount Relay This is the 5V relay most commonly used as switching device in electronic circuits. It is mainly used in Commonly switching circuits, For Home Automation projects to switch AC loads, To Control (On/Off) Heavy loads at a pre-determined time/condition, Used in safety circuits to disconnect the load from supply in event of failure. Nominal Coil Voltage: DC 5V Structure: Sealed type Coil Sensitivity: 0.36W Coil Resistance: 70-80 ohm Contact Pin Length: about 3.5mm     Package Included: 1 x 5V  10A PCB Mount Relay – Sugar cube 5 pin