Electromagnetic Relays are not very different in operation from Solid State Relays (SSR). The electromagnetic relays use moveable contact in opration, whereas SSR use semiconductors for no-contact operation. That means there is no mechanical contacts in SSR.
Features:
No reverse-surge voltage
Low current consumption
No bounce or chattering
No Arc
No operation sound
Long lifetime
Specification:
Input Power (DC): 5V
Trigger Voltage (CH) : 3.3V to 5V
Control Voltage: AC-240V 2A
