Best 4K Security Camera for a Business (2026)
What is the best 4K security camera for a business?
Updated November 2026 · Prices update live from silarius.com
For most businesses the best 4K camera is an 8MP Silarius model at about $250 to $300: the SIL-D8MPAU36 dome with two-way audio for indoors, or the Silarius X SIL-XT8MP28AU turret, SIL-XD8MP28AU dome or SIL-XB8MP28AU bullet, which record straight to Silarius Cloud with no recorder. For more detail pick the 12MP SIL-HD12MPAF; for long range the SIL-XPTZ8MP40X 8MP PTZ with 40x zoom.
Silarius 4K cameras
| Camera | Type | Resolution | Notes | Records to | Price |
|---|---|---|---|---|---|
| SIL-D8MPAU36 | Dome | 8MP 4K | Two-way audio, 3.6mm lens | NVR or cloud via Gateway | $249.99 |
| SIL-XT8MP28AU | Turret | 8MP 4K | IR night vision | Straight to Silarius Cloud (Silarius X) | $299.99 |
| SIL-XD8MP28AU | Dome | 8MP 4K | IR night vision | Straight to Silarius Cloud (Silarius X) | $299.99 |
| SIL-XB8MP28AU | Bullet | 8MP 4K | IR night vision | Straight to Silarius Cloud (Silarius X) | $299.99 |
| SIL-HD8MPAF | Dome | 8MP 4K | Auto focus | NVR or cloud via Gateway | $329.99 |
| SIL-HD12MPAF | Dome | 12MP 6K | Auto focus, more detail than 4K | NVR or cloud via Gateway | $399.99 |
| SIL-PB8MP28AU | Panoramic bullet | 8MP | 180° view, two-way audio | Silarius X | $499.99 |
| SIL-XPTZ8MP40X | PTZ | 8MP 4K | 40x zoom, IR | Straight to Silarius Cloud (Silarius X) | $1,899.99 |
Resolution and features are from each product title. All Silarius cameras are NDAA compliant, have a 3-year Silarius warranty and ship free in the US.
Is 4K worth it for security cameras?
4K UHD is 3840 × 2160 pixels, about 8.3 megapixels [1], so an 8MP camera is a 4K camera. Compared with a 4MP camera it has about twice the pixels across the same view, which is what lets you read a face or a plate further away or zoom into a recording. It is worth it at entrances, cash wraps, loading docks and parking lots; a 4MP or 5MP camera is usually enough for a hallway or a small room.
What 4K costs you besides the camera
Storage
A 4K camera recording 24/7 with H.265 uses about 65 GB a day, twice a 5MP camera. Size the drives with the NVR storage calculator, or record Silarius X cameras straight to Silarius Cloud with no recorder.
Recorder
Pick a 4K NVR with enough channels: the SIL-NVR4K16 records 16 cameras and powers 8 of them. See the best NVR for your cameras.
Network
Use Gigabit PoE switches when many 4K cameras share one uplink: what size PoE switch you need.
Sources
- 4K resolution (Wikipedia), 3840 × 2160 = 8,294,400 pixels, checked November 2026. en.wikipedia.org/wiki/4K_resolution
Related guides
- Turret vs dome vs bullet cameras
- The best camera to cover a wide area
- The best NDAA PTZ camera for a business
- How much a 4, 8 or 16 camera system costs
- All buying guides
Questions
What is the best 4K security camera for a business?
For most businesses an 8MP Silarius camera: the SIL-D8MPAU36 dome with two-way audio indoors, or a Silarius X SIL-XT8MP28AU turret, SIL-XD8MP28AU dome or SIL-XB8MP28AU bullet, which record straight to Silarius Cloud.
Is 8MP the same as 4K?
Yes. 4K UHD is 3840 × 2160 pixels, about 8.3 megapixels, so 8MP security cameras are 4K cameras.
Is 4K worth it for security cameras?
Where you need to identify faces or plates at a distance, yes: 4K has about twice the pixels of a 4MP camera. For hallways and small rooms 4MP or 5MP is usually enough.
How much storage does a 4K security camera use?
About 65 GB a day recording 24/7 with H.265, so about 2 TB for 30 days per camera.
Do 4K cameras need a special NVR?
They need an NVR that records 4K (8MP) on every channel, such as the Silarius SIL-NVR4K16. Silarius X cameras can skip the NVR and record to Silarius Cloud.
What warranty do Silarius cameras have?
Every Silarius camera, recorder and switch has a 3-year full Silarius warranty (solar products have their own terms).