Wireless Alarm Systems use battery-powered detectors that talk to the panel or hub by radio instead of cable. They suit finished homes, rentals, double-storeys and buildings where running cable is difficult or messy.
- Describe the layout: single or double-storey, wall types, distance to outbuildings.
- Say whether you want app control.
- Mention any existing wired system.
Describe your property once and compare wireless alarm quotes.
Get Wireless Alarm QuotesHow Wireless Alarms Work
Each detector sends an encrypted radio signal to the hub when it triggers, and regular check-in signals so the hub knows it is still working. The hub itself runs on mains power with a backup battery, and reports to your phone or a control room over Wi-Fi, Ethernet or a SIM card, depending on the model.
Practical Considerations
Detector batteries
Wireless detectors run on their own batteries. Manufacturers quote battery life in years, but real life depends on how often the detector triggers, the temperature and signal strength. The system should warn you of a low battery before it goes flat.
Signal range and layout
Range claims are for open space. Concrete slabs, face-brick, metal roofs, foil insulation and mirrors all reduce range. A signal test during installation shows whether a repeater or range extender is needed.
Power and maintenance
Wireless does not mean maintenance-free. The hub still needs mains power and a backup battery, detectors need battery changes, and outdoor units need cleaning. See alarm maintenance.
Installation
Installation is quicker and cleaner than wired, but detectors still need correct mounting height, angle and placement away from heaters, windows facing the sun and moving curtains.
Wired versus Wireless
| Factor | Wired | Wireless |
|---|---|---|
| Installation | Cabling through ceilings and walls | Mount and pair, little cabling |
| Power to detectors | From the panel and its battery | Each detector has its own battery |
| Ongoing upkeep | Panel battery, occasional faults | Panel battery plus detector batteries |
| Moving house | Stays with the property | Can usually be removed and refitted |
| Interference and range | Not affected by radio range | Depends on walls, distance and interference |
Brand-specific wireless options are on the Ajax alarm installation and Hikvision alarm installation pages.
Wireless Alarm Prices
| Item | Ballpark price |
|---|---|
| Wireless starter kit, equipment only | R3,200 - R10,500 |
| Wireless alarm system, installed | R6,000 - R13,000 |
| Wireless indoor motion detector | R895 - R1,356 |
| Outdoor motion detector, wireless | R2,700 - R4,480 |
| Wireless outdoor beam, 30 m | About R3,830 |
Ballpark figures, not quotations. Compiled from prices published by South African suppliers, retailers, installers and security companies, checked October 2026 and rounded. They are not our prices and no provider is bound by them. Equipment-only prices exclude installation. Some guide figures come from installer marketing pages and are less reliable than retailer prices. Confirm whether VAT is included on every quote.
Sources:
- Alarmtec online store, alarm kits, detectors, beams, batteries and Ajax ranges, prices including VAT (checked October 2026)
- PriceCheck retailer listings for IDS, Hikvision AX PRO, Ajax, Optex and battery products (listings seen September - October 2026, VAT not stated)
- Procompare, home alarm system, outdoor beams and security company price guides (2026, VAT not stated)
- JK Armed Response, home security cost and monthly monitoring fee guides (January - February 2026, VAT not stated)
- CCTV Direct, Takex outdoor detectors (checked October 2026)
What Affects the Cost
- Brand and hub model.
- Number of detectors and door contacts.
- Outdoor wireless detectors, which cost more.
- Range extenders for large or double-storey homes.
- SIM data or app subscriptions, where applicable.
Compare against wired systems on the alarm system prices guide.
What to Include in Your Request
- Town or suburb.
- Property type, number of storeys and wall construction.
- Number of rooms, outside doors and outbuildings.
- Pets inside at night.
- Preferred brand, if any.
- Never send alarm codes, app passwords or master PINs in a quote request. A provider will set or change these with you on site.
How the Enquiry Works
- Request. Describe the layout and what to protect.
- Match. Independent installers that may serve your area can respond.
- Signal check. A good installer tests signal strength before finalising the quote.
- Compare. Check brand, detector count and battery replacement costs.
- Choose. Appoint an installer, or nobody.
Request quotes from providers serving your area. Availability depends on your location and service requirements.
You can also compare wired and hybrid options from the same request on Alarm Systems South Africa.
Wireless Alarm FAQs
Do wireless alarms work during load-shedding?
The hub runs on its backup battery and detectors on their own batteries. How long it lasts depends on the hub, battery and communicator, so ask the installer.
How often do wireless detector batteries need replacing?
It depends on the model and use. Manufacturers quote years, but busy or outdoor detectors drain faster. The system should report low batteries.
Can wireless signals be jammed?
Modern systems use encryption and some detect jamming and report it. Ask installers what the specific system does.
Is wireless less reliable than wired?
Not necessarily, if the signal is tested and batteries are maintained. Wired avoids battery changes and radio range limits.
Can I add wireless detectors to a wired alarm?
Often, with a wireless receiver that suits the panel. See alarm system upgrades.
Related Services
Alarm Systems South Africa is a free quote-comparison service. Alarms are supplied, installed, repaired, monitored and responded to by independent providers, and your agreement is with the provider you appoint. Before you pay, ask each one for a written quote listing equipment, labour, warranty and any contract or cancellation terms.
Wireless Alarm Systems. One request, quotes from independent installers.
Get Wireless Alarm QuotesGet Wireless Alarm Quotes
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