Aiphone SP-20N/A Ceiling Speaker, ohm with LT-1 Transformer

Optimize site communications and security monitoring with the Aiphone SP-20N/A ceiling speaker — a purpose-built intercom accessory that delivers reliable two-way audio for entry control and surveillance applications. As an Aiphone ceiling speaker designed to pair seamlessly with LEF/LEM intercom stations, the SP-20N/A uses an 8" dual-cone driver and a 12-7/8" white baffle to project clear, natural voice reproduction across a 65 Hz–17 kHz frequency range. Its 20Ω impedance and LT-1 transformer support consistent levels when powered at 20V and integrated into centralized intercom and monitoring systems (requires NP-25V power module). The flush-mount form factor preserves clean ceiling lines while providing wide-area coverage—ideal for lobbies, retail floors, schools, and security control rooms where unobtrusive yet dependable audio is critical. NDAA compliance adds confidence for government and enterprise procurement. Upgrade your intercom and surveillance audio with the Aiphone SP-20N/A ceiling speaker for clearer communications and simplified installation — add it to your entry or security system today.

• Delivers intelligible two-way communication for intercom and entry systems, improving visitor screening and on-site coordination
• Powerful 8" dual-cone driver and wide frequency response for clear voice reproduction across common monitoring and security applications
• Flush ceiling design keeps installations discreet and professional in lobbies, retail, healthcare, and control rooms
• 20Ω impedance with LT-1 transformer compatibility ensures consistent volume levels and easy integration with LEF/LEM intercom systems
• NDAA-compliant and indoor-rated for secure, standards-driven deployments in government and enterprise environments