Apollo 55000-401APO — XP95 analogue-addressable fixed-temperature high-temperature (CS) heat detector. Designed for locations where smoke detectors are unsuitable (dusty, smoky or high‑airflow environments such as car parks, loading bays, kitchens and warehouses). The detector uses a single NTC thermistor for continuous temperature sampling and alarms at a fixed threshold of 90 °C.

• Fixed high-temperature (CS) operation — alarm at 90 °C (nominal analogue count 55 at alarm).
• Compatible with XP95/Discovery analogue-addressable loops (5–9 V p–p modulation).
• Single NTC thermistor sensing element with continuous sampling.
• Low airflow‑resistance white polycarbonate housing (self‑extinguishing) with integral red alarm LED and remote LED terminals (+R / −R).
• Wide operating range: −20 °C to +70 °C; IP53 environmental rating.
• EN54‑5 certified with additional third‑party approvals (LPCB, CPR etc.).

Applications

• Areas unsuitable for smoke detection: dusty, dirty or smoky environments, vehicle parks, plant rooms, kitchens and some industrial locations.
• Use where a fixed high-temperature alarm level (90 °C) is required.

Installation & compliance

• Requires a compatible XP95 base (refer to Apollo bases such as 45681‑210 standard base or 45681‑242 low‑power relay base where required).
• For correct operation fit only to compatible XP95/Discovery loop panels and follow Apollo installation instructions and local code (e.g. BS 5839 where applicable).
• Read the manufacturer datasheet before installation — ensure wiring, loop loading and base compatibility are confirmed by a competent installer.

Note: This description summarises manufacturer data. Consult the Apollo datasheet and product page for detailed electrical characteristics and installation guidance.