John Carlsen
Home security writer
John Carlsen writes home-security camera reviews, including a 2026 kit review on SafeWise. His own site describes freelance work on home security and smart-home products.
On ZOSI Security he writes the guides to camera kits, recorders and setup.
Articles by John Carlsen
- NVR vs DVR: Which Recorder Do You Need, and How Many Channels? Published
- How to Plan Security Camera Placement Around a House, Zone by Zone Published
- ZOSI Review: PoE Camera Systems, NVRs & Security Kits Published
- ZOSI C296 8CH 6×5MP Pan-Tilt Kit Review: Who It Fits Published
- C220 Fixed Domes vs C296 Pan-Tilt: Which ZOSI PoE Kit Fits? Published
- ZOSI C220 16CH 10×4MP Kit Review: Who It Fits Published
- How to Choose ZOSI PoE Camera Systems & Security Kits Published