There are several smoke detector types to suit different environments, and our expert electricians can recommend and install the best option for your home or business. Ionisation detectors are ideal for detecting fast-flaming fires, while photoelectric detectors respond better to smouldering fires with less visible smoke — making them the preferred option under Victorian regulations. For maximum protection, multi-sensor detectors combine both technologies, offering comprehensive coverage for a range of fire risks. Our services include installation, testing, replacement, and maintenance of 9v battery-powered and 240v mains-connected alarms with battery backup. We also advise on optimal placement, typically one detector per floor and near bedrooms or hallways for maximum coverage. If your alarm is beeping, not functioning correctly, or due for replacement, contact O'Brien Electrical Camberwell — your local smoke alarm specialists — on 1300 799 761 for prompt and professional service.