Business Hours

Monday–Friday, 9:00 AM–5:00 PM CT

Free Shipping $70+ · Chicago-Area Next-Day Delivery ▼

Free Shipping Over $70

Get free standard shipping on U.S. orders over $70.Exclusions may apply.

U.S. Shipping

We ship to eligible U.S. addresses, with many orders fulfilled from our Bensenville warehouse.

Faster Delivery Options

Expedited shipping is available for $15 on eligible orders at checkout.

*Available on most orders over $70. Certain exclusions may apply; see details for eligibility.

Security Camera Buying Guides & Resources

How to Find 4MP Cameras Compatible With Your Exact NVR Model

Author: BiJianxin

Published: October 08, 2026

Find compatible 4MP security cameras for your existing NVR. Learn how to check model numbers, firmware, recording resolution, ONVIF, bandwidth, and PoE.

4MP IP Camera 4MP Security Camera Existing NVR Upgrade NVR Camera Compatibility NVR Compatibility Guide

Your cart is empty

Free Shipping Over $70

U.S. Shipping

Faster Delivery Options

Security Camera Buying Guides & Resources

How to Find 4MP Cameras Compatible With Your Exact NVR Model

Solutions

Customer Service

Customer Support

Your cart is empty

Free Shipping Over $70

U.S. Shipping

Faster Delivery Options

Security Camera Buying Guides & Resources

How to Find 4MP Cameras Compatible With Your Exact NVR Model

Sign up for Arlington CCTV News & Special Offers

Solutions

Customer Service

Customer Support