12Pcs 5V DC Mini Power Relay Auto PCB SRD-05VDC-SL-C 5 Pins DC Power Relay PCB M
The relay plays the role as a protector or a circuit switch. The relays have 5 pins, can automatically adjust, protect and transform the circuit. 12 x SRD-5VDC-SL-C 5 pin relay. Built in circuit protection, safe to use.