https://www.electrodragon.com/product/delay-start-relay-board-ne555/
| SKU | timing | core | actuator |
|---|---|---|---|
| SCU1044-dat | ~ 25 seconds | NE555-dat | |
| SCU1047-dat | stc15w202s-dat | relay-dat | |
| SCU1048-dat | N76E003-dat | mosfet-dat | |
| SCU1050-dat | N76E003-dat | relay-dat |
legacy wiki page - https://w.electrodragon.com/w/MCU_Relay