This part is a kind of semiconductor called TR5V.

Function of this product has realy.

Manufacturers : ETC

Image and pinout :

Some of the text within the PDF file :

NINGBO TIANBO GANGLIAN ELECTRONICS CO., LTD TR5V SPECIFICATION FILE NUMBER：T810S-T001A DATE：2004/6/25 ■ CONTACT DATA www.net Contact Form Contact Material 1C Silver Alloy 2A 120VAC/2A 24VDC 120VAC/60VDC 2A 240VA/48W 100mΩMax 100,000 10,000,000 at 6VDC 1A Operations(at30Operations/minute) Operations Contact Ratings Max Switching Voltage Max Switching Current Max Switching Power Contact Resistance Life Expectancy Electrical Mechanical ■ GENERAL DATA Insulation Resistance Dielectric Strength Between Open Contacts Between Contacts and coil Operate Time Release Time Temperature Range Shock Resistance Vibration Resistance Humidity Weight Safety Standard Operating Extremes Damage Limits 1000MΩMin at500VDC 400VAC(for one minute) 1000VAC(for one minute) 4ms Max 3ms Max [ ... ]

TR5V PDF Datasheet Download