I have such time relay https://www.aliexpress.com/item/1005004845691710.html?spm=a2g0o.order_list.order_list_main.11.76d818021LVjCR
I have setup 15 sec delay.
When the coil is not powered nc is linked to com, "no" is not - this is good
After powering coil and when delay is elapsed no is linked...