Apollo Discovery 58000-600APO — Optical (photo‑electric) addressable smoke detector. Uses a forward light‑scatter chamber to detect slow‑burning and smouldering fires while reducing false alarms. Designed for commercial and residential applications including hospitals, hotels, offices, care homes and escape routes.

• Photo‑electric (light‑scatter) sensing chamber with drift compensation and five selectable response modes for false‑alarm management.
• Discovery analogue addressable protocol — reports analogue values (nominal 23, alarm threshold 55); sampling once per second.
• Remote LED/test connections (+R / −R) and remote test support.
• Wide supply and operating range: 17–28 V DC; low quiescent current (~440 μA at 24 V DC); alarm current ~3–3.4 mA (LED on).
• Durable white polycarbonate housing with stainless steel terminals; compact diameter 100 mm, low profile.
• Approved to EN54‑7 and covered by multiple regional approvals (LPCB, VdS, CPR). Manufacturer warranty: 10 years.

Safety & installation: Installation, commissioning and maintenance should be carried out by a qualified fire‑alarm engineer in accordance with local regulations and the manufacturer’s datasheet/installation instructions. Ensure compatibility with your Discovery protocol fire panel. Check local approvals (CE/UKCA) as required.