This is a kind of connector, whose appearance looks like a plug, but play its role as a connector in the use

General specifications: Current rating: 0.5A max. / 1 contact Voltage rating: AC 5V (r.m.s) Contact resistance: 50mΩ max. Insulation resistance: 100mΩ min. Withstanding voltage: 100V AC (r.m.s) Operating temperature: -20~+70oC Materials: Contact: copper alloy Shell: stainless steel or copper alloy Housing: high temp thermoplastic + glass fibre UL94V-0 Package: tape and reel package