Overview
The Apollo Discovery 58000-700APO multisensor detector combines a photo‑electric (optical) smoke chamber with a thermistor heat sensor to provide reliable, low‑nuisance fire detection. Signals from smoke and temperature are processed separately or combined (selectable modes) to suit different environments such as hotel bedrooms, hospital wards, offices, clean rooms and warehouses.

• Dual sensing: optical (photo‑electric) smoke + thermistor heat for improved detection and reduced false alarms.
• Five selectable response modes (including pure smoke or pure heat) so the detector can be tuned to the application.
• Automatic drift compensation maintains long‑term sensitivity and reduces maintenance intervention.
• Addressable Discovery protocol device with low quiescent current for efficient loop loading; many resellers list compatibility with XP95/CoreProtocol systems.
• Red alarm LED(s) plus remote LED terminals (+R / -R) for remote indication.
• Robust approvals: EN54‑5, EN54‑7 and multiple national approvals (LPCB, VdS, CPR etc.).

Key specifications

• Product code: 58000-700APO
• Dimensions: 100 mm diameter × 50 mm high (detector only); ≈58 mm high fitted in base
• Weight: ≈105 g (detector only); ≈160 g fitted in base
• Supply / operating voltage: 17–28 V DC
• Quiescent current: ≈470 µA (24 V DC)
• Operating temperature: −40 °C to +70 °C
• Humidity: 0–95% RH (non‑condensing)
• IP rating: IP44

Compliance & installation
Certified to EN54‑5 and EN54‑7 and listed with a number of national approvals (LPCB, VdS, CPR and others as noted by Apollo and distributors). Installation, commissioning and ongoing maintenance should be carried out by a suitably qualified fire‑alarm engineer in accordance with local regulations and the product datasheet. Isolate supply before installation or service. For full technical information and wiring details consult the official Apollo datasheet.