The System Sensor V4R2415ADA Speaker Strobe 15 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-candela strobe for fire alarm voice evacuation applications.

The V4R2415ADA supports both 25V and 70.7V speaker circuits with selectable speaker power taps from ¼ to 2 watts. The speaker and strobe operate on separate circuits, 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
• Fixed 15-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
• Separate speaker and strobe circuits
• Designed for compatible voice evacuation systems

Emergency Voice Speaker

The V4R2415ADA incorporates a speaker designed for emergency voice communication and signaling.

Typical functions include evacuation instructions, emergency announcements, alert tones, prerecorded messages, and live emergency paging.

The published speaker frequency range is:

400–4,000 Hz

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 voice evacuation systems.

Selectable Speaker Wattage

The V4R2415ADA provides selectable speaker power taps:

¼ W

½ W

1 W

2 W

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

15 Candela Strobe

The V4R2415ADA incorporates a fixed:

15 cd strobe

The visual portion operates from a compatible 24V notification appliance circuit.

Unlike multi-candela notification appliances, this model provides a fixed visual output.

Separate Speaker & Strobe Circuits

The speaker and strobe portions operate from independent circuits.

Speaker: Emergency voice/audio circuit

Strobe: 24V notification appliance circuit

This configuration allows the fire alarm system to manage emergency voice and visible notification according to the system design.

Electrical & Audio Information

Model: V4R2415ADA

Series: V400

Device Type: Speaker Strobe

Strobe Output: 15 cd

Strobe Voltage: 24V

Speaker Voltage: 25 / 70.7 VRMS

Speaker Taps: ¼ / ½ / 1 / 2 W

Speaker Frequency: 400–4,000 Hz

Notification Type: Audible / Visible

Product Status

The V4R2415ADA is a legacy System Sensor V400 Series notification appliance. For replacement applications, speaker voltage, wattage, strobe output, circuit voltage, and voice evacuation system compatibility should be verified.

V4R2415ADA Datasheet