When selecting fire detectors for high-end apartments, luxury villas and commercial fit-out projects, developers and contractors often choose between two mainstream sensor types: photoelectric and ionization smoke alarms.

Ionization alarms rely on radioactive materials to detect tiny particles from fast-burning open flames. Yet they carry clear drawbacks for premium property projects.They respond slowly to smoldering fires from mattresses, carpets and wooden furniture—the leading deadly fire hazard in residential spaces. Their radioactive core also brings strict waste disposal rules, and many European regions restrict large-scale residential installation of ionization devices.

Photoelectric smoke alarms stand out as the top pick for premium fit-outs. Built with optical sensing technology, they rapidly catch thick smoke from slow, smoldering household fires. They produce fewer nuisance false alarms from kitchen vapor and dust, and contain no radioactive substances, fully complying with EU environmental and EN 14604 safety standards.

Hangzhou Deheng Smart Electric Co., Ltd. develops two full photoelectric smoke alarm series, both ideal for high-end property projects.

l 3V Battery 10-Year Photoelectric Smoke Alarm(DH-00series)

This flagship model is tailor-made for long-cycle premium construction projects. It adopts factory-sealed 3V lithium batteries, delivering stable power supply for a full decade with zero battery replacement.

Equipped with high-precision photoelectric sensors, it delivers instant early warning for indoor smoldering fires, paired with a steady 85dB alarm volume at 3 meters. Its tamper-proof casing and ultra-low failure rate cut repeated maintenance labor for contractors, a perfect match for villa, rental block and large residential estate fit-outs.

l 9V Battery Classic Photoelectric Smoke Alarm(DH-01 series)

Designed for flexible, cost-controlled renovation projects, this classic line keeps reliable photoelectric detection performance.

It uses widely available replaceable 9V batteries, allowing simple self-replacement for household residents. Certified fully to TÜV Rheinland EN 14604, it balances stable fire safety and affordable pricing, suitable for mid-range apartments, small retail spaces and short-term accommodation fit-outs.

For any premium property fit-out, photoelectric detectors deliver safer, more compliant fire protection than ionization alternatives. Deheng’s two photoelectric series cover all project demands, from long-term bulk engineering orders to small-scale residential renovations.