System Sensor B501BHT-RC

The System Sensor B501BHT-RC is a temporal tone sounder base providing high-output audible notification with the three-pulse temporal fire alarm evacuation signal required by NFPA 72. The base integrates with System Sensor smoke detectors or other 200 Series sensor heads to combine detection and notification in a single device, suitable for commercial and residential life-safety applications.

Key Features

• High-output audible sounder with >90 dBA temporal tone pattern
• NFPA 72 three-pulse temporal evacuation signal
• Compact 6-inch diameter base design with 1.1-inch depth
• Supply voltage range: 15 to 32 VDC for flexible system integration
• Ultralow standby current (approximately 150 µA @ 24VDC) for extended battery life
• UL approved for grouped operation up to six bases

Technical Specifications

• Audio Output: >90 dBA in anechoic chamber @ 10 feet, 24V; 85 dBA in UL reverberant room
• Supply Voltage: 15 to 32 VDC nominal
• Standby Current: Approximately 150 µA @ 24VDC
• Response Time: Within notification requirements per NFPA 72
• Sensor Compatibility: System Sensor 200 Series detector heads
• Base Dimensions: 6-inch diameter x 1.1-inch depth
• Operating Temperature: 0° to 49°C (32° to 120°F)

Certifications

• UL Listed temporal tone sounder base
• NFPA 72 compliant audible notification