Simple
DIY wireless with SIM card support (you supply the card from your favorite carrier)
Cudy AC1200 Dual Band Unlocked 4G LTE
Modem Router with SIM Card Slot, **
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
For the
camera, I use a Reolink Argus PT mounted on one of my shrouds with its own
solar panel. It has excellent picture quality (day and night) and using the app for control I can pan 360 to view the entire boat and surroundings. I posted an attachment
screen snap of the app.
One bonus feature of the Reolink is that when you are aboard you can directly connect to the camera(s) without
internet IF you also connect your
phone to the same wireless hotspot (in my case, the Cudy router). Most other wireless
security cams will not
work at all without a live
internet connection.
I can point it straight down when
docking, and view the
dock on the side of my boat where I have poor visibility from the
helm. It could also be used as a rear facing cam when
docking.
For a “security system” that monitors the boat’s
battery, bilge etc. you can connect any other wireless system to the Cudy. You can also get additional Reolink cams for inside views.