Security cameras with no wifi? And Electric heaters?

[Raysa Acosta]

So I purchased my investments properties, and there are two things I'd appreciate recommendations for:

1. What is a good security camera system to install but with no wifi? (or if can you lmk of a cheap wifi carrier/solution that will be used only for hallways and exterior cameras). I dont want to pay $50 a month for wifi on each property for only 4 cameras. 

2. Electric heaters for apartment units. Any good and inexpensive brands that you reccommend?