Safety and Security — FAQ
What's the real difference between 1080P and 4MP resolution?
4MP delivers 2688×1520 pixels versus 1920×1080—roughly 1.8x more detail. This translates to 30% wider coverage area or 50% better digital zoom for identifying faces at 40ft versus 25ft with 1080P.
Do I need a monthly subscription for these systems?
None of our tested systems require subscriptions for basic recording. However, some offer optional cloud backup for remote footage access. The 4MP Dual Lens, ANNKE, and AIWIXEN provide full functionality without recurring fees.
Should I choose wired or wireless cameras?
Choose wired for reliability in permanent installations where you can run cables. Select wireless for rentals, historic homes, or difficult terrain. Modern dual-band WiFi systems match wired stability in most residential applications.
How much storage do I actually need for 4 cameras?
For 30 days of 24/7 recording: 1080P requires 1TB, 4MP needs 2TB, and 4K demands 4TB. H.265+ compression halves these requirements. Motion-only recording extends storage 3-5x but risks missing pre-event footage.
Can I expand these 4-camera systems later?
The ANNKE supports 8 total channels; the 4MP Dual Lens accepts 10. Battery-powered systems like GMK and AOSU are limited to their included cameras. Verify NVR channel count and power budget before purchasing additional cameras.
What IP rating do I need for outdoor cameras?
IP65 suffices for most climates—protected against rain and dust. Choose IP68 for coastal areas, hurricane zones, or extreme cold where ice and water submersion occur. All outdoor cameras here meet minimum IP65 standards.
