System Sensor V4R241575ADA Speaker Strobe 15/75 Candela

The System Sensor V4R241575ADA Speaker Strobe 15/75 Candela is a legacy audible/visible fire alarm notification appliance from the System Sensor V400 Series. It combines an emergency voice speaker with a fixed 15/75-candela strobe for voice evacuation and fire alarm notification applications.

The V4R241575ADA supports 25V and 70.7V speaker circuits with selectable speaker power taps. Its speaker and strobe circuits operate independently, allowing connection to compatible emergency voice and notification appliance circuits.

Product Functions

• Provides emergency voice notification
• Provides visible fire alarm notification
• Combines speaker and strobe functions
• Provides 15/75 candela visual output
• Supports 25V speaker circuits
• Supports 70.7V speaker circuits
• Provides selectable speaker wattage
• Supports evacuation messages
• Supports emergency announcements
• Supports live emergency paging
• Supports prerecorded messages and tones
• Uses separate speaker and strobe circuits
• Designed for compatible voice evacuation systems

Emergency Voice Speaker

The V4R241575ADA incorporates a speaker designed for emergency voice communication and fire alarm signaling.

Typical functions include:

• Evacuation instructions
• Emergency announcements
• Alert tones
• Prerecorded messages
• Live emergency paging

The speaker is designed to reproduce the voice-frequency range required for intelligible emergency communication.

25V / 70.7V Audio Operation

The speaker supports:

25 VRMS

70.7 VRMS

This dual-voltage capability allows the appliance to operate with common distributed fire alarm and emergency voice evacuation systems.

Selectable Speaker Wattage

The V400 Series speaker provides selectable power taps:

¼ W

½ W

1 W

2 W

The appropriate wattage can be selected according to required sound pressure, ambient noise, amplifier capacity, and emergency voice coverage.

15/75 Candela Strobe

The V4R241575ADA incorporates a fixed:

15/75 cd strobe

The strobe operates from a compatible 24V notification appliance circuit.

The 15/75 configuration is intended to provide 15-candela performance under applicable UL 1971 requirements with higher on-axis light output.

Separate Speaker & Strobe Circuits

The speaker and strobe portions use independent electrical circuits.

Speaker: Connects to the emergency voice/audio circuit

Strobe: Connects to the 24V notification appliance circuit

This allows the fire alarm system to control voice and visible notification according to the system design.

V400 Series Configuration

Model: V4R241575ADA

Series: V400

Device Type: Speaker Strobe

Strobe Output: 15/75 cd

Speaker Voltage: 25 / 70.7V

Speaker Taps: ¼ / ½ / 1 / 2 W

Strobe Voltage: 24V

Notification: Audible / Visible

Electrical & Audio Information

Speaker Voltage: 25 / 70.7 VRMS

Speaker Taps: ¼ / ½ / 1 / 2 W

Speaker Frequency: 400–4,000 Hz

Strobe Output: 15/75 cd

Strobe Voltage: 24V

Notification Type: Audible / Visible

Exact circuit loading should be determined from the applicable V400 Series technical documentation and selected speaker wattage.

Product Status

The V4R241575ADA is a legacy System Sensor V400 Series notification appliance. For replacement applications, speaker voltage, wattage, strobe output, circuit voltage, and compatibility with the existing voice evacuation system should be verified.

V4R241575ADA Datasheet