Dahua cam for office entrance

[fedter]

Hi,
I’m looking for a camera to monitor an office entrance door + indoor hallway.
Camera will be mounted indoors, ceiling-mounted at ~2.6m (8.5 ft).

Main goal: reliable detection of intruders outside business hours.

Requirements:

• Dome or turret
• Budget: $100–350 (max $500)
• At least detection, preferably identification level
• Built-in AI person detection (camera-side)
• On person detection: recording + mobile alerts
• Good performance in low light / flashlight-only scenarios

Setup:

• Synology NAS (Surveillance Station)
• Cloud (Hetzner Storage Box with SFTP / FTPS / WebDAV)
• May later be extended with a door sensor and Home Assistant (optional integration)

I've attached a floor plan of the office. The minimum required monitoring area is marked as "monitored area", however full coverage of the entire office hallway is also acceptable and welcome.

Questions:

• Is Synology Surveillance Station sufficient as a recorder, or should I use a dedicated NVR?
• Which cameras with built-in AI work well with Synology?
• Can I reliably store recordings both locally (Synology) and offsite (Hetzner cloud)?
• Which camera model would you recommend for this setup (EU/Germany availability preferred)?

 

[bigredfish]

The first question is light as always. Everything else takes a backseat

Are you ok with IR B&W image or must it be color?

Show a pic of normal nighttime ambient light (assume daytime has adequate light)

Can you trip external (not onboard of the camera) motion activated lights (1000-2000 lumens ) upon human detection?

Are you ok with a camera with always on white LEDs at night?

Without further knowledge, I recommend

A) the 5442 series 4MP turret. But without external white light, it will be an IR capture. Best quality image. Color possible but with external bright motion activated light

B) the Color 4M-T turret. Has onboard white light which can be activated by motion, but lesser overall quality image due to less quality sensor. But if you can supplement it with external motion flood it will likely be ok

Both can do Human activation, mobile live and playback.

Face detection at those distances is pretty reliable, face recognition on most cameras is more hit and miss

I don’t use Synology so no help on integration

8ft is fine for either with a 3.6mm lens. Assuming placement where the front room meets the hallway. You won’t see behind that point

 

[fedter]

Are you ok with IR B&W image or must it be color?

In night vision mode, the image may be B&W, but in daylight or under adequate lighting, it should be in color.

Show a pic of normal nighttime ambient light (assume daytime has adequate light)

Unfortunately, I don't have a picture taken in the dark right now. When the room light is turned on, there's plenty of light. If a thief leaves the light off, it's very dark. But I've attached a picture taken in daylight.

Can you trip external (not onboard of the camera) motion activated lights (1000-2000 lumens ) upon human detection?

Yes, I'm going to install an external motion sensor so that a 2000-lumen plug-in lamp turns on via Home Assistant.

Are you ok with a camera with always on white LEDs at night?

That wouldn't bother me if it only glowed at night, since I'm not in the office at night anyway

8ft is fine for either with a 3.6mm lens. Assuming placement where the front room meets the hallway. You won’t see behind that point

I would install the camera further away from the entrance so that I can capture the entire area marked in yellow. The thief would have to run through the entire hallway anyway. There’s nothing of interest to a thief in the front rooms near the entrance.


Based on this new information, would you recommend a different camera?
Can the cameras mentioned upload the footage directly to the cloud?

 

[bigredfish]

I would go with the 5442 S3 turret 3.6mm or possibly the varifocal model if you’re not sure on placement.

IR at night, but can instantly change over to good color quality with 2000 lumens at 8-15 ft
Color during day if course

For face detection and capture (not necessarily face recognition ie: comparing in a database) the ideal for me has been at 8-10 ft with the fixed 3.6

But I do have a 5442 Z4 that is tightly zoomed at 50ft and does pretty well.

The distinction being that you want a relatively tight focus not wide angle at distance

 

[bigredfish]

Note

You won't get good ID at the doorway itself without a variable focus cam zoomed in if placed at the far end of the hallway, to do so then you would loose FOV in the hallway. That would defeat your goal

With a fixed 3.6mm camera at the end of the yellow area you would get a good face capture once he got to about 8-10ft from the camera, but you wouldnt get good ID quality at the door.

Just so we're on the same page