2.1MP Cameras have 3 times the resolution of a 700TVL analog camera and now with the new 4K cameras out (about 12 Mega Pixels) it's much more definition as long as you have a 4K Monitor. A 700TVL camera is about 700,000 whereas the 2.1MP is 2.1 Million
Typical wire for an analog camera system was RG59 Coax with the 18g2c power wire and now the IP cameras run on CAT5 or CAT6 cable
Tell your camera contractor how many days of storage you need so you can pick the proper amount of storage, typically we recommend 1TB for every camera to get around 30 days of storage
Instead of a DVR Digital Video Recorder the IP cameras have NVRs which are Network Video Recorders. Typically you can install a camera no more than 328 feet from the recorder although with special equipment we can install cameras further than that.
Peak Alarm has experts in cameras as well as fire alarm, access control and security. Call Larry for a free site visit and pricing
When you buy systems from a big box store the quality is not the same. When you hold a $30 dollar camera in your hand and hold a $300 dollar camera in the other hand the difference is marked.