Outdoor Speaker Unit (OSU)
The Outdoor Speaker Unit (OSU) is an integral part of the ATI system.
The OSU provides 400 Watts of continuous audio output power for
reliable outdoor alert tone notification, voice instruction and
public address in emergency situations. The OSU is monitored, controlled
and activated by the ATI
Central
Control Unit (CCU).
Standard Features
- NEMA-4/3R enclosure
- Remote Terminal Unit (RTU) controller board
- Temperature-compensated battery charger
- Power on/off circuit breakers and intrusion switch
- 400 Watt Class D Amplifier
- Conventional VHF or UHF radio and mounting hardware
- 25 volt and 70 volt audio output line for driving long speaker
wire runs with minimum losses
- Simple and compact hardware design
- Field-proven reliability
- Exceptional acoustic performance and intelligibility
- Unique, compact and highly-efficient Class D amplifier
- 400 Watts of continuous audio output power
- Supports 30 minutes of continuous activation
- Built-in tone generator providing for eight standard, pre-configured
tones
- 127 pre-recorded voice messages, up to 30 minutes of recording
time
- Local and remote testing and reporting with silent test
option
- Standard VHF and UHF radio receives and transmits FSK, DTMF
and Two Tone Sequential (TTS) data signals
- Automatic gain control for consistent output volume
- Very low standby power requirements
- Message encryption and security coding prevent unauthorized
system activations
- Conformal-coated printed circuit boards for operating in
harsh environments
- Temperature-compensated battery charger ensures batteries
are at full capacity
- Meets UFC and FEMA requirements
Optional Features
- Custom alert tones and digital messages
- Advanced Communication Board upgrade to MP3/WAV digital
voice messaging and Mini-SD flash memory card for easy message
replacement, supports 255 messages and over 100 hours of recording
time
- Local control panel upgrade with microphone, LCD display
and controls
- Trunked radio upgrade
- Flexible, redundant communication options including IP,
Ethernet, twisted pair/phone line, cellular, satellite
- Antenna surge protector option
- Strobe light and LED sign output options
- Choice of speaker type and configuration
- NEMA-4/3R stainless steel enclosure upgrade
