The DC voltage input from the control terminal of relay 24v products makes the light-emitting diode inside the relay work, and the switch circuit composed of the triac in the output loop is turned on through optical coupling, that is, the control of the output terminal is completed.

No matter how many volts the relay 24v is, look at their current and multiply the current by 220V to get the power. Anything less than this power can be used.

A pcb relay product is an electrical control device, which is an electrical appliance that causes the controlled quantity to undergo a predetermined step change in the electrical output circuit when the change in the input quantity (excitation quantity) meets the specified requirements.

Automotive PCB relay products are mainly composed of coils, armatures, moving contacts and static contacts. When the current passes through the coil, a magnetic field is generated, attracting the moving contact to move, and contacting the static contact, so that the terminal 1 and the terminal 2 are connected, so the main circuit forms a loop, so that the controlled electrical appliances are put into operation.