Optocoupler relay circuit, Phototransistor Optocoupler, optocoupler as a switch

 MFP4 SMT Single Channel 40 V 3750 Vrms Transistor Output Optocoupler

https://www.futureelectronics.com/p/semiconductors--optoelectronics--isolation-components-optocouplers/fodm2705r2-onsemi-4186558