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Surveillance
We write down what you can see at the distance you actually install at.
Pixels per metre, the storage sum and the switch budget, all on one page.
Before you choose
How many pixels per metre are left at the distance written down
A camera does not “see” further: it loses pixels per metre. Below are the figures we measured.
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Identifying a person You can tell a police officer who it is.The distance written downat 5 m 250Pixels per metre See the cameras
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Recognising a face you know You recognise someone you already know.The distance written downat 8 m 125Pixels per metre See the cameras
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Observing what a person is doing You see the gestures, not the face.The distance written downat 15 m 62Pixels per metre See the cameras
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Detecting that someone is there You see that someone is moving, nothing more.The distance written downat 25 m 25Pixels per metre See the cameras
The drawn scale goes up to 300
The figures are measured by us on the cameras in stock, at the light level written in each sheet.
In stock, in the warehouse
The recording
How much space the archive days written down need
“How long is the footage kept” is a simple sum, but only with measured figures. Below are ours.
Continuous recording
- GB per day, per camera
- 26
- How many cameras
- 8
- How many days of archive
- 30
The safest and the hungriest.
See the recordersRecording on motion
- GB per day, per camera
- 9
- How many cameras
- 8
- How many days of archive
- 30
It skips the hours when nobody passes.
See the recordersNight only
- GB per day, per camera
- 11
- How many cameras
- 4
- How many days of archive
- 30
For yards and warehouses closed during the day.
See the recordersWrite in the settings the resolution and bitrate you measured at, and the total will show up.
A hard disk is never filled to the brim: leave free space and count the spare disk too.
By kind of equipment
Power over the cable
How many watts the cameras need against the budget written down
Cameras powered over the network cable draw on the switch budget. Below is the sum on the figures we wrote down.
77watts needed by the figures written down
Write the switch budget in the settings and the bar and the remainder will show up.
Leave a margin: in winter, cameras with a heater and the light on draw more than the box says.
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Fixed camera, 4 MP With the infrared on.Watts per unit7 How many units6 42W
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Motorised camera with a light The peak draw, not the average.Watts per unit13 How many units2 26W
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Warning speaker It only draws power while it talks.Watts per unit9 How many units1 9W
What you can see at night, mode by mode
Most complaints come from the night, not from the day.
- How far
- up to 30 m, written in the sheet
- What you can make out
- Outlines and movement; you cannot see the colour of clothes.
- What it needs
- No extra lamp needed.
- How far
- up to 15 m, written in the sheet
- What you can make out
- Muted colours and faces only close up.
- What it needs
- A street or yard lamp switched on.
- How far
- up to 20 m, written in the sheet
- What you can make out
- Full colour, inside the beam.
- What it needs
- More power from the switch while the light is on.
- How far
- up to 20 m, written in the sheet
- What you can make out
- Black and white until someone passes, then colour.
- What it needs
- A spot where a sudden light does not bother the neighbours.
The distances are the ones written in the camera sheet, measured without rain and without fog.
Compatibility
Which camera works with which recorder
The verdicts are the ones we tried ourselves, on the recorders in stock.
| Camera | 4-channel NVR | 8-channel NVR | 16-channel NVR | Hybrid recorder | |
|---|---|---|---|---|---|
| Fixed 4 MP camera | works | works | works | works | |
| Motorised 4 MP camera | works | works | works | works, without the pan control | |
| 8 MP camera | works | works | |||
| Camera with a speaker | works, without audio | works | works | ||
| Video doorbell | works, through the brand’s app | works, through the brand’s app |
An empty cell means we have not tried that combination, not that it does not work. Write to us and we will try it.
Before you install
What you may film, what you may not and what is compulsory
A camera is not only a device: the moment it catches other people, you have duties. Below is what we tell every customer before they order.
allowed
- Your own house and yard Cameras that look only at your own property, without catching the road or the neighbour’s yard.
- The entrance to a company or a shop With signage at the entrance and a written retention term.
compulsory
- The sign at the entrance A visible sign, before the filmed area, saying who the operator is and how to reach them.
- A written retention term You write down how long you keep the footage and you delete on time. “As much as fits on the disk” is not a term.
- Who looked at the footage You keep a written record of who saw the images, when and why.
not allowed
- The neighbour’s yard and windows You do not point the camera at someone else’s property, even if it “only catches a bit”.
- Audio without saying so Audio recording has to be announced separately and in many places is not allowed at all.
- Hidden cameras at work Monitoring employees without their knowledge is not done, however good the camera is.
We are not data protection consultants. If you install cameras where other people pass, ask a specialist first, not afterwards.
How the install is done, step by step
The order we work in, so nothing is dug up twice.
- 01 We put the cameras on a planOn a sketch of the site, with the distances written down.
- 02 We pull the cablesOne network cable per camera, on a protected run.
- 03 We fit the recorder and the switchIn a rack or a closed cabinet, with ventilation.
- 04 We set it up and hand it overAngles, motion zones, retention term, the sign at the entrance.
Pulling the cables and the mains work are done by an electrician; we fit the equipment and set it up.
Pixels per metre
Written for the real distance.
Storage worked out
From measured GB per day.
The switch budget
Checked before the order.
We talk about the law too
Signage and a retention term.
Frequently asked questions
The questions we get most often before an order, answered once, in writing.
Is your question missing? Write to us and we will add it to the list.
Will I really recognise a face at 25 metres?
No, and no camera does it at any resolution. At 25 metres few pixels per metre are left: you see that someone passes. For a face you need a camera closer in or with a narrower angle — in the table on this page we write exactly how many pixels per metre are left at each distance.
How long is the footage kept?
As long as you decide and as much as fits on the disk. On this page is the sum on the figures we measured: GB per day, how many cameras and how many days. The retention term is written down and kept to, not left to the disk.
Will the cameras fit on my switch?
It depends on the switch’s watt budget, not on its port count. Send us its model and we will work it out together with the figures from the camera sheets.
Do I need a sign at the entrance?
Yes, if other people walk through the filmed area. The sign goes before the filmed area and says who the operator is.
Will the camera work on my internet, without a recorder?
It will, but then the footage sits with the maker, on a subscription. If you want the images on your own premises, you need a recorder and a disk.
Can I have a business invoice?
Yes, with a tax number. For large projects write to us and we will send a quote with the bill of materials.
After the purchase
Guarantee, returns and setup
The guarantee term is the one in the maker’s certificate. A camera already mounted and drilled into a wall cannot be returned as new: ask us for a trial setup before you drill the first hole.
Keep the box and the drilling template: they help with returns and with moving the camera.
- A written warranty The term is the one in the maker’s certificate.
- 30-day returns For uninstalled equipment, in its box.
- A trial setup On the bench, before the install, so you see the real picture.
New stock and new firmware
One email when new cameras, recorders or readers arrive.