It is a relay for 5V signal control that can be applied and used in areas requiring various contact control. It can receive a 5V signal and control the power supply up to 250V (10A). It is a compact, sealed 5-pin type, and can control NO and NC types.
SRD-05VDC-SL-C Datasheet – 5V, RELAY, Pinout – SONGLE
How Relay Works SRD-05VDC-SL-C