It is T90 a 12VDC 6Pin 30A Power Relay. The relay is switched with the help of a small signal from a microcontroller like an Arduino. This relay can be used to drive 30A devices.
Single channel simple magnetic relay for PCB mount. this module is in line with international safety standard, USES the loose quality goods relay; dc or ac signal control, can control 220 v ac load; have power and relay operation instructions, and bright, disconnect the dawn; signal input signal, the public end and will often start conduction; can be used as a microcontroller development board module, can be used as a home appliance control; and one often opened a normally closed contact;