# Smoke Alarms — Five Dock, NSW 2046
Canonical URL: https://empireelectricalcontractors.com.au/services/smoke-alarms/five-dock
Empire Electrical Contractors · Phone +61468404608 (24/7)

Compliant hardwired and 10-year lithium smoke alarms

NSW law requires working smoke alarms on every level of every home. We supply and install hardwired 240V or 10-year lithium alarms - interconnected, compliant, and ready for inspection.

## Local context
Five Dock sits in Inner West, Sydney. Postcode 2046, coordinates -33.8683, 151.1272.
Nearby landmarks: Great North Rd shops, Five Dock Park, Timbrell Park.
Common property types: Federation cottages, post-war brick, waterside homes.
Italian-Australian community with a strong renovation culture — kitchen and outdoor entertaining relights are common.
We also service: Strathfield, Strathfield South, Homebush, Homebush West, Burwood, Croydon.

## What's included
- Hardwired 240V photoelectric alarms with battery backup
- 10-year sealed lithium alarm supply and install
- Interconnection of alarms across the whole home
- Rental property compliance certificates
- Replacement of expired alarms (10-year life)
- Heat alarms for kitchens and garages

## Overview
In NSW the law is simple: every home must have at least one working photoelectric smoke alarm on every storey, and homes built after 1997 must be hardwired. Rental properties need a compliance check before each new tenancy. We install both types — 240V hardwired photoelectric alarms with 10-year sealed lithium backup, or standalone 10-year lithium alarms where hardwiring isn't practical — and interconnect them so when one triggers, they all sound.
Interconnection is the single biggest life-safety upgrade you can make. A fire in the laundry at 3am won't wake someone sleeping at the far end of the house on the top floor — unless every alarm goes off at once. Modern alarms interconnect wirelessly (no wiring between them), so we can retrofit interconnection to any existing hardwired or lithium install in about an hour per alarm.
For landlords and property managers we issue a formal compliance certificate on the same visit, testing every alarm, replacing anything past its 10-year date stamp, and photographing each unit for your records. Heat alarms — the correct sensor for kitchens and garages where photoelectric alarms cause nuisance triggers — are installed where required.

## Fixed pricing
$150–$380 AUD per alarm installed. Workmanship warranty 60 months. Typical on-site duration ~2 hours.

## Symptoms we hear about
- Alarm chirping every few minutes (9 V battery flat)
- One alarm sounds, others stay silent (not interconnected)
- Ionisation-only alarms in a rental — non-compliant since 2022
- Alarm past its 10-year replacement date

## Common causes
- Old 9 V units rather than 10-year lithium sealed alarms
- No hard-wired or wireless interconnection
- Ionisation-only alarms (slower to detect smouldering fires)
- Alarms installed too close to a kitchen or bathroom

## How we handle it
1. **Site audit** — We check every bedroom, hallway and level for coverage, alarm age and interconnection status.
2. **Spec the upgrade** — We spec AS 3786-compliant photoelectric 10-year alarms, interconnected via mains or wireless mesh.
3. **Isolate and remove** — Old alarms removed, existing wiring inspected, and any 9 V bases decommissioned.
4. **Install and interconnect** — New alarms mounted per manufacturer spacing, terminated to the lighting circuit, and paired to the interconnect group.
5. **Test the whole chain** — Trigger one alarm and confirm every alarm on the property sounds within 10 seconds.

## Applicable standards
- AS 3786:2014 — Smoke alarms using scattered light
- NSW Environmental Planning & Assessment Regulation 2021 — smoke alarm requirements

## Seasonal note
Winter heater and electric-blanket season drives the biggest spike in home fires — the ideal time to check and replace alarms is late autumn.

## Recent anonymised jobs
### Interconnected 10-year alarm upgrade
Investment property in Five Dock needed compliant interconnected alarms across three levels. We replaced ageing 9 V units with hard-wired 10-year lithium alarms interconnected via wireless mesh.
Outcome: AS 3786-compliant coverage, one alarm triggers all, ready for lease.. Approx. 160 minutes on site.

### Hard-wired alarms after renovation
Extension in Five Dock needed alarms tied to the new circuits. We hard-wired 240 V photoelectric alarms in bedrooms and hallway, interconnected them and issued the CCEW.
Outcome: Compliant coverage across old and new sections, CCEW issued.. Approx. 140 minutes on site.

## FAQs
**What does NSW law require?**
One working smoke alarm on every storey - hardwired for homes built after 1997, either type for older homes, but photoelectric type only. Rentals require a compliance check before each new tenancy.

**Should alarms be interconnected?**
Highly recommended and required in some new builds. When one alarm triggers, all of them sound - critical for waking sleepers on the opposite end of the house.

**How often should alarms be replaced?**
Every 10 years, regardless of type. The sensor degrades - a 12-year-old alarm may look fine and still not trigger. Check the date on the back.

**Do you provide rental compliance certificates?**
Yes - we test, replace where needed, and issue a landlord compliance certificate on the same visit.

**Photoelectric or ionisation — which one?**
Photoelectric only. Ionisation alarms are no longer recommended in NSW — they respond too slowly to the smouldering fires that kill most people. Any alarm we install is photoelectric.

**Can I retrofit wireless interconnection to my existing alarms?**
Only if they're the same brand and support wireless interconnection. If not, replacing all alarms with a matched wirelessly-interconnected set is usually cheaper than trying to mix systems.