Intercom systems installed the way they should be — clear, reliable, weatherproof

For a standalone house with a driveway gate, a wired video intercom gives the best image quality and the most reliable operation. For sites where trenching a cable is impractical, a GSM intercom that routes calls to your mobile is often a better fit.

For estates and complexes, IP-based systems that integrate with existing CCTV and access control are usually the right long-term platform. Where the fault turns out to be the motor itself, that is ordinary gate motor repair work rather than anything exotic.

The single biggest failure point on new intercom installations is cabling. We use shielded, UV-stable cable, run it in conduit, and terminate cleanly. The intercom station itself is mounted at the correct height, angled away from direct sun, and sealed against rain ingress.

Intercoms integrate naturally with access control and gate automation — worth planning together at install time.

We repair all common intercom brands — Centurion, ET Nice, Comelit and others. Most failures are either the outdoor station's speaker/microphone unit failing due to weather, or the wiring corroding at the terminal block. Both are same-visit fixes.

Intercom installations happen weekly across Sandton and Randburg, with high volumes in Bryanston, Sandhurst and Fourways. Midrand estates in Kyalami and Waterfall are also regular sites.

A wired intercom runs a cable from the gate to a handset inside the house. It is the most reliable of the three, it does not depend on a phone network or a router, and it keeps working when everything else is down. Its limitation is the cable: on a long driveway or a retrofit through finished paving, getting it there is most of the job.

A GSM intercom uses a SIM card and phones you when a visitor presses the button. Nothing to wire back to the house, it reaches you wherever you are, and it suits long runs and smallholdings where a cable is impractical. It depends on network coverage at the gate and on somebody remembering to keep the SIM in credit — the two reasons GSM units quietly stop working. On a slider, the track and the rack are dealt with under sliding gate repairs.

A video or IP intercom sends picture and audio over the property network, to a handset or a phone. It answers the question the other two cannot: who is actually standing there. It needs power and a reliable network path at the gate, and it is only as good as the connection behind it.

Most households are best served by wired where the cable run is feasible, GSM where it is not, and video wherever knowing who is at the gate genuinely matters.

On a retrofit, the intercom itself is rarely the expensive part. Getting a signal from the gate to the house is.

A driveway that was paved after the house was built, a garden with mature roots, and a gate sixty metres from the front door all turn a straightforward installation into a planning exercise. The options are trenching, running in existing conduit if any was laid, going around the boundary, or accepting that GSM is the sensible answer for this property. On a swing gate, the hinges, posts and arms come under swing gate repairs.

What should never happen is cable strung along a wall or draped where a strimmer will find it. It works for a season and fails in the first storm, and the fault it produces is intermittent — the most expensive kind to chase.

Where trenching is genuinely needed, that is quoted separately and honestly, because it is real work and pretending otherwise is how a small quote becomes an argument.

A block or a complex is a different specification. One gate serves many households, the panel needs a directory, and each unit needs to be able to open the gate independently.

The questions that matter are how many units, whether the body corporate or a managing agent instructs the work, where the panel is mounted relative to a driver's window, and what happens when a unit changes hands.

That last one is where most complex systems fall down. A directory nobody updates is a system that gradually stops matching the building, and after enough turnover residents start propping the gate instead. Whoever manages the scheme should own that list, and it should be part of the handover rather than an afterthought. Anything that genuinely cannot wait is handled as an emergency gate repair, at any hour.

Moisture. It is the single biggest cause of intercom failure, and it comes from a panel mounted without a proper seal or without a drip edge above it. The symptom is a unit that works in dry weather and crackles or dies after rain.

Cable damage, usually from garden work or subsidence, producing a fault that comes and goes with temperature.

On GSM units, a lapsed SIM, a network change, or a signal that was marginal at the gate on installation day and has since got worse.

And on video, a network path that was good enough in the first week and has since had a router replaced or a channel changed underneath it.

None of those are exotic, and all of them are why the installation quality matters more than the brand on the panel.

The mounting position decides how well an intercom works, and it is settled in ten minutes on site rather than from a catalogue. Where a motor has reached the end of its life, replacing it properly is covered under gate motor installation.

It needs to be reachable from a car window without opening the door, at a height that works for a driver rather than a standing adult, and angled so that afternoon sun is not directly on the lens of a video unit.

It needs something above it to shed water. A panel mounted flush on an open pillar with nothing overhead will take rain straight into its seams, and moisture is the commonest cause of intercom failure by a wide margin.

And it needs to be where the cable can actually reach it without crossing a driveway that will be dug up later.

Most properties in this corridor were built before an intercom was standard, which makes almost every installation a retrofit.

The first question is what path exists. Some houses have a conduit from the gate that was laid speculatively and never used, which turns a difficult job into an easy one. Some have an alarm cable running the same route that can be shared. Most have nothing, and the honest options are trenching, going around the boundary, or GSM. A diagnosis before anything is replaced is the whole basis of gate motor repairs here.

The second question is where the handset goes, and the answer is rarely one place. A handset in the kitchen is useless at night; one in the main bedroom is useless during the day. Two stations, or a GSM unit that rings a phone, solve what a single badly placed handset never will.

Neither question is answered from a catalogue. They are answered by walking the property once, which is what a site assessment is for.

The test of an intercom installation is not the day it goes in. It is the following winter.

Cable in conduit, terminated in a sealed housing, with a drip edge above the panel. Fixings that are not going to rust and stain the pillar. A panel angled so a driver can reach it and so afternoon sun is not straight into a camera lens.

And on GSM, a SIM on an arrangement somebody is actually going to maintain, with the account details written down rather than living in one person's memory. Wheels, rack and pinion are the usual culprits, and they sit under sliding gate repair.

The failures we are called to are almost never the electronics. They are water, cable damage, and a SIM nobody topped up.