R&D Fotek 24V-380V 40Amp 250V SSR-40 DA Solid State Relay Module 3-32V DC To AC Electronic Components Electronic Hobby Kit

This is SSR-40DA Solid State Relay Module 3-32VDC/24-380VAC 40A. A solid-state relay (SSR) allows you to control high-current AC loads from lower voltage DC control circuitry. Solid-state relays have several advantages over mechanical relays. One such advantage is that they can be switched by a much lower voltage and at a much lower current than most mechanical relays. Also, because there are no moving contacts, solid-state relays can be switched much faster and for much longer periods without wearing out.