Apollo 55000-018APO AlarmSense Open‑Area Sounder — a wall‑mounted open‑area sounder for AlarmSense two‑wire systems. Provides synchronised Apollo tones for clear audible warning in open spaces, is polarity‑insensitive for simplified wiring and features an IP65 rated enclosure for dust and water protection.

• Key features: synchronised Apollo tones; polarity‑insensitive connections; IP65 dust/water protection; common first‑fix base and device locking facility; compact polycarbonate housing.
• Applications: ideal for offices, retail and other open indoor areas or exposed locations where IP65 is required. Designed for use on AlarmSense two‑wire loops.
• Installer notes: common first‑fix base and polarity‑insensitive wiring speed installation and reduce wiring errors. Refer to the official datasheet for loop current, tone settings and full installation guidance.
• Approvals & compliance: consult the manufacturer datasheet for standards and approvals before installation.

Manufacturer warranty: 10 years (manufacturer/reseller listings). For full electrical figures and approvals see the Apollo product page and datasheet.