It's been echod several times in this thread already but:
Wireless and security are oil and water. They do not mix. This goes byond wifi. If your security system has wireless sensors (door, window, motion) - you aren't secure. Please do not buy smart locks.
Wireless cameras are not security - they are a convenience. A convenience for checking on the kids in the back or seeing if that package got delivered.
If it's not wired and powered it is at best a scarecrow and at worse an indicator that you have money and you feel secure.