This is a pic of a Sonoff R1where to cut for a dry switch for, Garage door, Turn on off Invertor .....etc
(https://i.ibb.co/C6CPCVQ/Sonoff-R1-bottom.jpg) (https://ibb.co/C6CPCVQ)
This is what the top should look like
(https://i.ibb.co/9y2z03x/Sonoff-R1-top.jpg) (https://ibb.co/9y2z03x)