This relay card is designed for the secure and efficient connection of loudspeaker lines in PA and voice evacuation systems. Specifically developed for use with the RSC-132A monitoring controller, the card supports up to 8 speaker circuits per unit, with a maximum of 4 cards (32 circuits) connectable to a single controller.

A standout safety feature of this card is the additional line-specific protection relay. In the event of a short circuit, this relay will automatically disconnect the affected speaker line from the amplifier’s 100V output after measurement, preventing further damage and preserving system integrity. This ensures uninterrupted operation of unaffected zones and enhances overall system reliability.

Perfectly suited for mid-size to large installations in public buildings, transportation hubs, or industrial facilities where line fault isolation and compliance with safety standards is critical.

Technical Data:

• Product type: Relay card for speaker line connection
• Compatibility: RSC-132A line monitoring controller
• Capacity: 8 speaker circuits per card
• Max expansion: 4 cards per RSC-132A (32 circuits total)
• Protection feature: Relay disconnects faulty line from 100V output after short-circuit detection
• Application: Voice alarm and PA systems with line supervision
• Mounting: 48,3 cm ( 19 inch ) rack or system cabinet (depending on controller housing)

Included Items:

• 1x Relay card for 8 speaker circuits
• 1x Connection guide / quick start instructions

Special Features:

• Automatic short-circuit detection and isolation per line
• Ideal for monitored EN 54-16 compliant evacuation systems
• Expandable modular design for up to 32 zones
• Ensures system stability through selective disconnection of fault lines