Budget: 4000 UAH Deadline: 5 days
Good time. I can execute this scheme on low-voltage equipment, just for powering from a car.
Also, as a remote control, you can order a ready-made solution
https://www.aliexpress.com/item/1005002717619987.html?src=google&src=google&albch=shopping&acnt=494-037-6276&isdl=y&slnk=&plac=&mtctp=&albbt=Google_7_shopping&aff_platform=google&aff_short_key=UneMJZVf&gclsrc=aw.ds&&albagn=888888&&ds_e_adid=&ds_e_matchtype=&ds_e_device=c&ds_e_network=x&ds_e_product_group_id=&ds_e_product_id=ru1005002717619987&ds_e_product_merchant_id=109001457&ds_e_product_country=UA&ds_e_product_language=ru&ds_e_product_channel=online&ds_e_product_store_id=&ds_url_v=2&albcp=19373879459&albag=&isSmbAutoCall=false&needSmbHouyi=false&gad_source=1&gclid=Cj0KCQjwgL-3BhDnARIsAL6KZ68JwhekvNdqOT1dkDNkCiOKSQogL0tLI8JzT3O4xJzhoY01s9CLW_gaAhe3EALw_wcB
or come up with something of your own and integrate it for remote control.
Send the details, we will think.