This part is a kind of semiconductor called JQX-78F.

Function of this product has Power Relay.

Manufacturers : Clion

Image and pinout :

Some of the text within the PDF file :

HHC71F-4(JQX-78F) Power Relay Model and Description ★Contact form: A=NO, B=NC, C=NO&NC Dimension Form Rated load Max switching voltage Contact Feature Contact resistance Material Electrical life Mechanical life Operate voltage (23℃) Release voltage (23℃) 8 c T 2A,2B,2C Specification t e n ua ce. r e .n a ww Foam box Foam box F w C Maximum voltage (23℃) Normal coil voltage Coil power DC AC AC DC DC6-220V(Customize allowed) AC6-380V(Customize allowed) 3.6W 10.5VA ≤25ms ≤25ms 1500VAC/1min(leakage current 1mA) 1500VAC/1min(leakage current 1mA) 2500VAC/1min(leakage current 1mA) ≥200mΩ(500VDC) -25℃ ～55℃ 45%-75%RH 86-106KPa 10G (sinusoidal half-wave pulse: 11ms) 10-55Hz (double amplitude: 1.5mm) Plung in or Flange Pick-up time Release time Dielectric strength I [ ... ]

JQX-78F PDF Datasheet Download