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Security Cameras

How Construction Site Security Cameras Work: 4G vs Solar vs Wi-Fi

Summary

Construction site security cameras record around the clock, push motion alerts to your phone, and stream live over a 4G SIM, a solar powered 4G unit or site Wi-Fi. Most South East Queensland sites use 4G, because it needs no existing internet and works from day one.

28 July 2026
Updated July 2026
Solar panel and 4G pan-tilt security camera mounted on a site pole
C
Operations

Charles runs operations at Poles and Holes, the family-run Capalaba business supplying South East Queensland since 1960. He looks after the site camera fleet, connectivity and delivery logistics across Brisbane, Logan, Redlands, Ipswich and Moreton Bay.

Most builders ask us how construction site security cameras work about ten seconds before they ask whether the thing will run on a block with no power and no internet. The short answer to the second question is yes, and the reason is worth understanding before you pick a camera type, because the power and connectivity decision is the one that actually matters on a build. If you want the range and what each option costs, that sits on our construction site security camera hire page.

How do construction site security cameras work?

A construction site security camera records around the clock, pushes an alert with a snapshot to your phone when it detects movement, and streams live when you open the app. Three things make that chain work: a power source, a connection, and a way for you to get at the footage.

Take those in order, because every difference between camera types comes down to one of the three.

Power is either mains, drawn from a temporary power pole once the site has one, or a solar panel charging a battery in the unit. Nothing else is practical on a live build.

Connectivity is a 4G SIM inside the camera, or the site's own Wi-Fi where an always-on router already exists. On most builds it is 4G.

Your footage is yours. You reach it through your own secure login, and you have complete control over everything the camera captures while it is on hire. Poles and Holes does not hold or save any of it.

Recording continuously rather than only on movement is what makes the power budget matter. A camera that never stops draws more than one that wakes on a sensor, which is why the standalone unit carries a 90W panel and a large battery rather than something smaller.

Do construction site security cameras need Wi-Fi?

No. A 4G construction site camera carries its own SIM and needs no site internet at all, which is why most South East Queensland sites use 4G rather than Wi-Fi. Wi-Fi only enters the picture once the site has a powered, always-on connection, which on a typical residential build does not exist until very late, if ever.

This is the single most common misconception we correct on the phone. People assume a camera needs internet the way a laptop does, and that the site therefore needs a connection before security is possible. It does not. The camera is closer to a mobile phone than to a desktop computer.

The practical consequence is that a camera can go up on day one, on a bare block, before the slab is poured and before the power pole is in the ground. That first fortnight is when a site is at its most exposed, because there is nothing on it yet except the materials that just arrived.

Are 4G construction site cameras reliable in Brisbane and SEQ?

4G construction cameras are reliable across the large majority of South East Queensland, including the growth corridors where most builds are happening. Ripley, Springfield, Yarrabilba, Caboolture, Coomera and Redland Bay all sit on solid mobile coverage. The exceptions are genuine blackspots, mainly deep-valley hinterland sites and some remote rural addresses west of the range.

Signal is the one variable worth checking before you commit, because a camera on a weak connection uploads slowly and alerts late, which defeats the point of having it. Coverage maps are drawn at a level of detail that does not tell you much about one specific block, so we work from the exact site address rather than the suburb.

Coverage is fine across the Redlands and out through Logan, and we deliver from our Capalaba depot across Brisbane and SEQ. We have been family run since 1960 and the camera fleet runs out of the same depot as the poles.

How do solar powered construction site cameras work when it is cloudy?

A solar construction camera runs off a battery that the panel recharges during daylight, so it keeps working through overcast weather rather than switching off when the sun goes in. A correctly sized panel is matched to overcast winter conditions, not to ideal summer sun, which is what gives it the headroom to ride out a wet week.

The variable that catches people out is not rain, it is shade. A panel that never sees direct sun, because a building has gone up beside it or a tree overhangs it, will not recharge properly no matter how good the weather is. That is why the install visit includes choosing where the panel points, and why we reposition it as the build changes shape around it.

If your site is going to lose sun as the structure rises, the cleaner answer is to switch the camera to mains power from your temporary power pole hire, which we can do inside the same hire rather than making you sign a second contract.

Can I install a CCTV camera without Wi-Fi?

Yes, and on a construction site it is the normal way to do it. A 4G camera connects straight to the mobile network, so there is no router to set up, no cable to run and no internet account to open. You get live view and motion alerts on your phone, exactly as you would at home.

The two things a camera without Wi-Fi still needs are power and a mount. Power comes from either a self-contained solar panel and battery, or from mains once your temporary power pole is energised. The mount is a fence post, a dedicated camera pole, or the power pole itself.

On a hire, we handle the install, so the only thing you organise is the site address.

Which CCTV camera is better, wifi or wired?

Neither is better outright, it depends on what the site already has. A wired camera is the most reliable option where mains power and a fixed internet connection already exist. A Wi-Fi camera suits a site that already has a powered, always-on router. On a construction site, neither condition is usually met in the first weeks of the job.

So on a live build the honest answer is normally 4G: on mains from the power pole where one exists, and on solar where it does not. Wired wins on pure reliability and always will, but it is not available to you until the building is finished, at which point the site camera is coming down anyway.

Ranked on reliability the order is wired, then 4G, then Wi-Fi. Wi-Fi lands last on a building site because it depends on a router in a shed, and the shed gets switched off.

Do security cameras record all the time?

Ours do. Our site cameras record around the clock rather than only when something trips a sensor, streaming live to your phone when you open the app. Motion alerts still come through, but the recording underneath them is continuous, so the footage is there whether or not the camera judged the moment worth keeping.

That distinction matters after a theft. The useful footage is often the hour before it, showing a vehicle doing a slow pass or someone walking the fence line, and a motion-triggered system will frequently have skipped exactly that.

Continuous recording is the reason the standalone unit carries a 90W panel and a large battery rather than something smaller: the power budget has to cover a camera that never stops. Our construction site security camera hire guide covers how footage handling and signage work in practice.

Is 2K or 4K better for security cameras?

Higher resolution is only better if the connection can carry it. 4K produces a sharper image when you zoom into footage, but it consumes far more data than 2K. On a 4G-connected construction camera that trade-off matters, because the footage travels over a mobile connection rather than fixed broadband.

The practical rule is that placement beats resolution nearly every time. A camera mounted at the right height, aimed at the gate and the material stack rather than at the whole block, will give you usable identification at a lower resolution than a higher-specification unit pointed vaguely at the site.

Which camera type survives a Queensland storm?

All three types survive a Queensland storm if the unit is specified for outdoor site conditions, but they fail differently. A wired camera loses its feed if the cable is damaged or the power drops. A Wi-Fi camera drops out the moment the site shed loses power. A 4G camera on solar keeps running on battery.

That is the real argument for 4G and solar in a Brisbane wet season. The camera is at its most useful precisely when the site is at its most vulnerable, which is during and immediately after a storm, when the site is empty, access is easy and nobody is watching.

Wind is the other consideration, and it is a mounting question rather than a camera question. A unit on a dedicated pole or an existing power pole rides out weather far better than one strapped to a loose fence panel.

What makes solar cost more than mains 4G to hire?

A solar camera costs more per week than a mains-powered 4G camera because you are hiring more hardware: the panel, the battery and the heavier mounting needed to carry both. A mains unit draws power from a pole that is already on site, so the hire is the camera and the mount alone.

The figures are published. A camera mounted on a power pole is about $69 a week excluding GST, and a standalone solar camera pole is about $100 a week. Both run on a 12 week minimum hire and delivery is $390 excluding GST inside the standard zone. Everything else is on our hire prices page.

Ranked on hire cost the order is Wi-Fi lowest, because there is no SIM or data in the rate, then mains 4G, then solar. In practice Wi-Fi is rarely available when you actually need a camera, so the real choice is between the last two, and it is decided by whether the site has an energised pole yet.

Our recommendation by site type

Match the camera to the stage the site is at, not to the specification sheet. A bare block with no pole takes solar and 4G. A site with an energised temporary power pole takes a mains 4G camera on the pole. A fitout or a warehouse with an always-on router can take Wi-Fi.

Once you know which type suits the site, what site camera hire costs in QLD covers what you are actually up for.

  • New residential build, pre-slab: solar and 4G on a dedicated pole. Nothing else works on day one.
  • Residential build, pole energised: mains 4G mounted on the power pole. Cheaper, and no dependence on sunlight.
  • Civil or open site: multiple 4G units, placed by sightline rather than by boundary length.
  • Fitout or warehouse: Wi-Fi is viable if the router is genuinely always on. Confirm that before relying on it.
  • Rural or hinterland block: check signal at the exact address before booking anything.

Send us the site address and what stage the build is at, and we will tell you which camera type suits it.

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Frequently asked questions

Can security cameras work without Wi-Fi?
Yes. A 4G construction site camera carries its own SIM card in the same way a phone does, connects straight to the mobile network, and needs no site Wi-Fi and no existing internet connection of any kind. That is the whole reason 4G is the default on South East Queensland building sites, where the block usually has no power and no internet for the first few weeks of the job. Pair the 4G with a solar panel and battery and the camera needs nothing from the site at all, which means it can go up on day one of a bare slab in Ripley or Yarrabilba before the temporary power pole is even in the ground. The only requirement is workable mobile coverage at the address. Where a site sits in a genuine blackspot, and there are a handful in the hinterland and out past the Darling Downs, we check coverage before you book rather than after.
Which CCTV camera is better, wifi or wired?
For a construction site, neither. Wired cameras are better in a finished building where someone can run cable through a ceiling, because a wired connection never drops out and never needs a password reset. Wi-Fi is better in a fitout or a warehouse that already has an always-on router. On a live build, the honest answer is that both lose to 4G, because a construction site rarely has the cabling or the internet connection either of them depends on. The question people are really asking is about reliability, and the ranking there is wired first, then 4G, then Wi-Fi last, because site Wi-Fi is only as reliable as the site shed it lives in. We have seen a shed router switched off at knock-off every night, which quietly made the camera useless for exactly the hours it was hired to cover.
Do security cameras record all the time?
Our site cameras do, yes. They record around the clock rather than only when something moves, and stream live to your phone whenever you open the app. That matters more than it sounds on a construction site, because a motion-triggered camera only gives you the moments it decided were worth keeping, and the useful footage after a theft is often the hour before it, showing a vehicle doing a slow pass. Continuous recording costs you more power, which is exactly why the standalone unit carries a 90W panel and a large battery rather than something smaller. You get a secure login to your own viewing portal, and you have complete control over everything the camera captures while it is on hire. Poles and Holes does not hold or save any of it, so download anything you want to keep before collection day.
Is 2K or 4K better for security cameras on a building site?
Resolution matters far less on a building site than where the camera is pointed. A 4K camera aimed across an empty slab will tell you less than a 2K camera covering the gate and the material stack, because identification depends on how much of the frame the subject actually fills. Higher resolution does help when you need to read a number plate or a face at distance, so if the gate is thirty metres from the only sensible mounting point, resolution earns its keep. It also costs you: 4K uses more mobile data and more power, which on a solar unit is a real constraint through a Brisbane wet season. Our advice on most residential and small commercial builds is to spend the effort on placement and mounting height first, then lift resolution only where the distance genuinely demands it.
Is a 5MP camera good enough for a construction site?
For most South East Queensland building sites, yes. A 5MP camera covering a gate, a compound or a material stack at sensible distance gives you enough detail to identify a vehicle and a person, which is what an insurer and the police are going to ask you for. Where 5MP starts to fall short is long range identification, so if the only mounting point puts your camera well back from the area you actually care about, you either move the camera closer or step the resolution up. The more common failure we see is not resolution at all. It is a camera mounted too low, aimed too wide, or pointed into the western sun so every afternoon frame is a silhouette. Get the placement right and 5MP does the job on the overwhelming majority of builds we cover across Brisbane and the Redlands.

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