I've found the ring doorbell the best for remote alarm events
I've installed one in a remote shed using a 4G SIM WIFI router to get it on the net, the ring battery lasts about a month and the wifi usb device lasts about a week on a 20000mah battery pack.
I've installed one in a remote shed using a 4G SIM WIFI router to get it on the net, the ring battery lasts about a month and the wifi usb device lasts about a week on a 20000mah battery pack.