Smoke Detector DELTA-OPTI SDA-250 — autonomous optical smoke sensor, model SDA-250

The DELTA-OPTI SDA-250 is an autonomous optical (photoelectric) smoke sensor designed for standalone fire detection in homes, offices and small commercial premises. The detector continuously monitors for visible combustion particles and triggers a local audible alarm when smoke is detected. The self-contained design requires no external control panel or wiring for basic operation, making it suitable for applications where independent smoke detection is required.

Advantages

The optical sensing chamber provides reliable detection of smouldering fires and visible particle build-up while reducing false alarms from brief non-hazardous aerosols. Built as a self-contained unit, the detector is simple to install and maintain, with a compact profile that blends into typical interior ceilings or walls. The audible alarm alerts occupants locally, offering immediate notification without the need for external systems.

Suitable for

• Residential rooms and apartments
• Small offices and administrative areas
• Retail premises and small commercial spaces
• Storage rooms, corridors and utility areas

Key specifications

• Detection principle: optical (photoelectric) smoke sensing
• Operation: autonomous, self-contained unit with local audible alarm
• Detection target: visible combustion particles and smouldering fire products
• Typical mounting: ceiling or high wall installation
• Form factor: compact, low-profile enclosure suitable for indoor use

How to use

Install the detector on a ceiling or high on a wall according to room layout and manufacturer spacing guidelines. Power the unit as specified by the manufacturer and verify the detector’s ready/standby indication. Test the alarm function after installation to ensure audible notification is operating. Clean the sensing chamber periodically following the manufacturer’s maintenance instructions to maintain sensitivity and reduce false alarms. Replace consumable power sources or the device according to the manufacturer’s recommended service life.

Usage recommendations

Place the detector away from ventilation intakes, bathrooms and cooking appliances to minimise nuisance alarms. Follow spacing and placement guidance for even coverage of the protected area, and perform regular functional tests and maintenance to ensure reliable operation.